About N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid
N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid (PubChem CID 158251933) has the molecular formula C167H208N16O25S5
and a molecular weight of 2999.92 g/mol. Its IUPAC name is N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid.
Frequently Asked Questions
What is the IUPAC name of N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid?
The IUPAC name of N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid (CID 158251933) is N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid.
What is the SMILES notation for N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid?
The canonical SMILES for N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid is CC(C)(C)OC(=O)N1C[C@H]2CC(=O)C[C@H]2C1.CC(C)(C)OC(=O)N1C[C@H]2CC(N)C[C@H]2C1.COc1cc2c(cc1OC(C)C)-c1c(-c3cccs3)cc(C(=O)N(C)C3C[C@@H]4CN(C(C)=O)C[C@@H]4C3)n1CC2.COc1cc2c(cc1OC(C)C)-c1c(-c3cccs3)cc(C(=O)NC3C[C@@H]4CN(C(=O)OC(C)(C)C)C[C@@H]4C3)n1CC2.COc1cc2c(cc1OC(C)C)-c1c(-c3cccs3)cc(C(=O)NC3C[C@@H]4CN(C(C)=O)C[C@@H]4C3)n1CC2.COc1cc2c(cc1OC(C)C)-c1c(-c3cccs3)cc(C(=O)NC3C[C@H]4CNC[C@H]4C3)n1CC2.COc1cc2c(cc1OC(C)C)-c1c(-c3cccs3)cc(C(=O)O)n1CC2.
What is the InChIKey of N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid?
The InChIKey is GGUZOSAWXSAHOT-HBLJWJFRSA-N. The full InChI is InChI=1S/C33H41N3O5S.C31H37N3O4S.C30H35N3O4S.C28H33N3O3S.C21H21NO4S.C12H22N2O2.C12H19NO3/c1-19(2)40-28-16-24-20(14-27(28)39-6)9-10-36-26(15-25(30(24)36)29-8-7-11-42-29)31(37)34-23-12-21-17-35(18-22(21)13-23)32(38)41-33(3,4)5;1-18(2)38-28-15-24-20(13-27(28)37-5)8-9-34-26(14-25(30(24)34)29-7-6-10-39-29)31(36)32(4)23-11-21-16-33(19(3)35)17-22(21)12-23;1-17(2)37-27-14-23-19(12-26(27)36-4)7-8-33-25(13-24(29(23)33)28-6-5-9-38-28)30(35)31-22-10-20-15-32(18(3)34)16-21(20)11-22;1-16(2)34-25-13-21-17(11-24(25)33-3)6-7-31-23(12-22(27(21)31)26-5-4-8-35-26)28(32)30-20-9-18-14-29-15-19(18)10-20;1-12(2)26-18-11-14-13(9-17(18)25-3)6-7-22-16(21(23)24)10-15(20(14)22)19-5-4-8-27-19;1-12(2,3)16-11(15)14-6-8-4-10(13)5-9(8)7-14;1-12(2,3)16-11(15)13-6-8-4-10(14)5-9(8)7-13/h7-8,11,14-16,19,21-23H,9-10,12-13,17-18H2,1-6H3,(H,34,37);6-7,10,13-15,18,21-23H,8-9,11-12,16-17H2,1-5H3;5-6,9,12-14,17,20-22H,7-8,10-11,15-16H2,1-4H3,(H,31,35);4-5,8,11-13,16,18-20,29H,6-7,9-10,14-15H2,1-3H3,(H,30,32);4-5,8-12H,6-7H2,1-3H3,(H,23,24);8-10H,4-7,13H2,1-3H3;8-9H,4-7H2,1-3H3/t2*21-,22+,23?;20-,21+,22?;18-,19+,20?;;8-,9+,10?;8-,9+.
What are the key properties of N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid?
N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid has a molecular weight of 2999.92 g/mol, XLogP of 30.72, 29 rotatable bonds, 6 hydrogen bond donors, and 36 hydrogen bond acceptors.
Where does this data come from?
All data for N-[(3aS,6aR)-1,2,3,3a,4,5,6,6a-octahydrocyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aS,6aR)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-N-methyl-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;N-[(3aR,6aS)-2-acetyl-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrol-5-yl]-8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxamide;tert-butyl (3aS,6aR)-5-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aS,6aR)-5-[(8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carbonyl)amino]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carboxylate;tert-butyl (3aR,6aS)-5-oxo-1,3,3a,4,6,6a-hexahydrocyclopenta[c]pyrrole-2-carboxylate;8-methoxy-9-propan-2-yloxy-1-thiophen-2-yl-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylic acid is sourced from PubChem (CID 158251933), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).