About 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid
2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid (PubChem CID 170522205) has the molecular formula C188H272N42O45S2
and a molecular weight of 3904.63 g/mol. Its IUPAC name is 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid.
Frequently Asked Questions
What is the IUPAC name of 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid?
The IUPAC name of 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid (CID 170522205) is 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid.
What is the SMILES notation for 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid?
The canonical SMILES for 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid is CCCC[C@H]1C(=O)N(C)[C@@H](CCCC)C(=O)N[C@@H](CC(C)C)C(=O)N[C@H](C(=O)NCC(N)=O)CSCC(=O)N[C@@H](Cc2ccc(O)cc2)C(=O)N(C)[C@@H](C)C(=O)N[C@@H](CC(N)=O)C(=O)N2CCC[C@H]2C(=O)N[C@@H](CNCC(O)COCC(O)CNC[C@@H]2NC(=O)[C@@H]3CCCN3C(=O)[C@H](CC(N)=O)NC(=O)[C@H](C)N(C)C(=O)[C@H](Cc3ccc(O)cc3)NC(=O)CSC[C@@H](C(=O)NCC(N)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCC)N(C)C(=O)[C@H](CCCC)N(C)C(=O)[C@H](Cc3cn(CC(=O)O)c4ccccc34)NC(=O)[C@H](CCN)NC(=O)[C@H](Cc3c[nH]c4ccccc34)NC(=O)[C@@H]3C[C@@H](O)CN3C(=O)[C@H](CC(C)C)NC2=O)C(=O)N[C@@H](CC(C)C)C(=O)N2C[C@H](O)C[C@H]2C(=O)N[C@@H](Cc2c[nH]c3ccccc23)C(=O)N[C@@H](CCN)C(=O)N[C@@H](Cc2cn(CC(=O)O)c3ccccc23)C(=O)N1C.
What is the InChIKey of 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid?
The InChIKey is KCRWGOXABDBDEU-CHYLKUPCSA-N. The full InChI is InChI=1S/C188H272N42O45S2/c1-21-25-45-145-173(259)205-127(67-101(5)6)167(253)217-141(163(249)199-87-155(193)239)97-276-99-157(241)201-133(71-107-53-57-113(231)58-54-107)179(265)219(15)105(13)161(247)209-137(79-153(191)237)183(269)227-65-37-51-147(227)175(261)215-139(171(257)211-131(69-103(9)10)185(271)229-91-115(233)77-151(229)177(263)207-129(73-109-81-197-123-43-33-29-39-119(109)123)169(255)203-125(61-63-189)165(251)213-135(181(267)223(19)149(47-27-23-3)187(273)221(145)17)75-111-89-225(93-159(243)244)143-49-35-31-41-121(111)143)85-195-83-117(235)95-275-96-118(236)84-196-86-140-172(258)212-132(70-104(11)12)186(272)230-92-116(234)78-152(230)178(264)208-130(74-110-82-198-124-44-34-30-40-120(110)124)170(256)204-126(62-64-190)166(252)214-136(76-112-90-226(94-160(245)246)144-50-36-32-42-122(112)144)182(268)224(20)150(48-28-24-4)188(274)222(18)146(46-26-22-2)174(260)206-128(68-102(7)8)168(254)218-142(164(250)200-88-156(194)240)98-277-100-158(242)202-134(72-108-55-59-114(232)60-56-108)180(266)220(16)106(14)162(248)210-138(80-154(192)238)184(270)228-66-38-52-148(228)176(262)216-140/h29-36,39-44,49-50,53-60,81-82,89-90,101-106,115-118,125-142,145-152,195-198,231-236H,21-28,37-38,45-48,51-52,61-80,83-88,91-100,189-190H2,1-20H3,(H2,191,237)(H2,192,238)(H2,193,239)(H2,194,240)(H,199,249)(H,200,250)(H,201,241)(H,202,242)(H,203,255)(H,204,256)(H,205,259)(H,206,260)(H,207,263)(H,208,264)(H,209,247)(H,210,248)(H,211,257)(H,212,258)(H,213,251)(H,214,252)(H,215,261)(H,216,262)(H,217,253)(H,218,254)(H,243,244)(H,245,246)/t105-,106-,115+,116+,117?,118?,125-,126-,127-,128-,129-,130-,131-,132-,133-,134-,135-,136-,137-,138-,139-,140-,141-,142-,145-,146-,147-,148-,149-,150-,151-,152-/m0/s1.
What are the key properties of 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid?
2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid has a molecular weight of 3904.63 g/mol, XLogP of -5.46, 62 rotatable bonds, 38 hydrogen bond donors, and 51 hydrogen bond acceptors.
Where does this data come from?
All data for 2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6-[[[3-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-6-yl]methylamino]-2-hydroxypropoxy]-2-hydroxypropyl]amino]methyl]-15-(2-amino-2-oxoethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-3,30-bis(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-39-yl]methyl]indol-1-yl]acetic acid is sourced from PubChem (CID 170522205), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).