1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one

C181H122F16N32O8 — CID 158690792

About 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one

1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one (PubChem CID 158690792) has the molecular formula C181H122F16N32O8 and a molecular weight of 3177.15 g/mol. Its IUPAC name is 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one.

Molecular Properties

• Compound Name: 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one
• PubChem CID: 158690792
• Molecular Formula: C181H122F16N32O8
• Molecular Weight: 3177.15 g/mol
• Exact Mass: 3174.99
• IUPAC Name: 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one
• SMILES: C=C1Cc2cc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)ccc2N1.CC1=CCc2cc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)ccc21.Cn1cc2cc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)ccc2n1.Cn1cc2cccc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)c2c1.Cn1cnc2ccc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)cc21.O=c1cnc2ncccc2n1Cc1c(F)cc(-c2ccc3[nH]ccc3c2)cc1F.O=c1cnc2ncccc2n1Cc1c(F)cc(-c2ccc3c(c2)CC=C3)cc1F.O=c1cnc2ncccc2n1Cc1c(F)cc(-c2cccc3c2C=NC3)cc1F
• InChI: InChI=1S/C24H17F2N3O.2C23H16F2N4O.C23H15F2N3O.2C22H15F2N5O.2C22H14F2N4O/c1-14-4-5-16-9-15(6-7-18(14)16)17-10-20(25)19(21(26)11-17)13-29-22-3-2-8-27-24(22)28-12-23(29)30;1-28-11-14-4-2-5-16(17(14)12-28)15-8-19(24)18(20(25)9-15)13-29-21-6-3-7-26-23(21)27-10-22(29)30;1-13-7-16-8-14(4-5-20(16)28-13)15-9-18(24)17(19(25)10-15)12-29-21-3-2-6-26-23(21)27-11-22(29)30;24-19-10-17(16-7-6-14-3-1-4-15(14)9-16)11-20(25)18(19)13-28-21-5-2-8-26-23(21)27-12-22(28)29;1-28-12-27-18-5-4-13(9-20(18)28)14-7-16(23)15(17(24)8-14)11-29-19-3-2-6-25-22(19)26-10-21(29)30;1-28-11-15-7-13(4-5-19(15)27-28)14-8-17(23)16(18(24)9-14)12-29-20-3-2-6-25-22(20)26-10-21(29)30;23-18-7-14(15-4-1-3-13-9-25-10-16(13)15)8-19(24)17(18)12-28-20-5-2-6-26-22(20)27-11-21(28)29;23-17-9-15(13-3-4-19-14(8-13)5-7-25-19)10-18(24)16(17)12-28-20-2-1-6-26-22(20)27-11-21(28)29/h2-4,6-12H,5,13H2,1H3;2-12H,13H2,1H3;2-6,8-11,28H,1,7,12H2;1-3,5-12H,4,13H2;2-10,12H,11H2,1H3;2-11H,12H2,1H3;1-8,10-11H,9,12H2;1-11,25H,12H2
• InChIKey: IGIBAFKFPJIVJO-UHFFFAOYSA-N
• XLogP: 32.97
• TPSA: 462.99 Ų
• H-Bond Donors: 2
• H-Bond Acceptors: 39
• Rotatable Bonds: 24
• Heavy Atoms: 237
• Complexity: —

Lipinski Rule of Five

3 violations

Rule	Value
MW ≤ 500	3177.15
LogP ≤ 5	32.97
H-Bond Donors ≤ 5	2
H-Bond Acceptors ≤ 10	39

Frequently Asked Questions

What is the IUPAC name of 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one?

The IUPAC name of 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one (CID 158690792) is 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one.

What is the SMILES notation for 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one?

The canonical SMILES for 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one is C=C1Cc2cc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)ccc2N1.CC1=CCc2cc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)ccc21.Cn1cc2cc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)ccc2n1.Cn1cc2cccc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)c2c1.Cn1cnc2ccc(-c3cc(F)c(Cn4c(=O)cnc5ncccc54)c(F)c3)cc21.O=c1cnc2ncccc2n1Cc1c(F)cc(-c2ccc3[nH]ccc3c2)cc1F.O=c1cnc2ncccc2n1Cc1c(F)cc(-c2ccc3c(c2)CC=C3)cc1F.O=c1cnc2ncccc2n1Cc1c(F)cc(-c2cccc3c2C=NC3)cc1F.

What is the InChIKey of 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one?

The InChIKey is IGIBAFKFPJIVJO-UHFFFAOYSA-N. The full InChI is InChI=1S/C24H17F2N3O.2C23H16F2N4O.C23H15F2N3O.2C22H15F2N5O.2C22H14F2N4O/c1-14-4-5-16-9-15(6-7-18(14)16)17-10-20(25)19(21(26)11-17)13-29-22-3-2-8-27-24(22)28-12-23(29)30;1-28-11-14-4-2-5-16(17(14)12-28)15-8-19(24)18(20(25)9-15)13-29-21-6-3-7-26-23(21)27-10-22(29)30;1-13-7-16-8-14(4-5-20(16)28-13)15-9-18(24)17(19(25)10-15)12-29-21-3-2-6-26-23(21)27-11-22(29)30;24-19-10-17(16-7-6-14-3-1-4-15(14)9-16)11-20(25)18(19)13-28-21-5-2-8-26-23(21)27-12-22(28)29;1-28-12-27-18-5-4-13(9-20(18)28)14-7-16(23)15(17(24)8-14)11-29-19-3-2-6-25-22(19)26-10-21(29)30;1-28-11-15-7-13(4-5-19(15)27-28)14-8-17(23)16(18(24)9-14)12-29-20-3-2-6-25-22(20)26-10-21(29)30;23-18-7-14(15-4-1-3-13-9-25-10-16(13)15)8-19(24)17(18)12-28-20-5-2-6-26-22(20)27-11-21(28)29;23-17-9-15(13-3-4-19-14(8-13)5-7-25-19)10-18(24)16(17)12-28-20-2-1-6-26-22(20)27-11-21(28)29/h2-4,6-12H,5,13H2,1H3;2-12H,13H2,1H3;2-6,8-11,28H,1,7,12H2;1-3,5-12H,4,13H2;2-10,12H,11H2,1H3;2-11H,12H2,1H3;1-8,10-11H,9,12H2;1-11,25H,12H2.

What are the key properties of 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one?

1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one has a molecular weight of 3177.15 g/mol, XLogP of 32.97, 24 rotatable bonds, 2 hydrogen bond donors, and 39 hydrogen bond acceptors.

Where does this data come from?

All data for 1-[[2,6-difluoro-4-(3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-indol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1H-isoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(3-methylbenzimidazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylidene-1,3-dihydroindol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylindazol-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(1-methyl-3H-inden-5-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one;1-[[2,6-difluoro-4-(2-methylisoindol-4-yl)phenyl]methyl]pyrido[2,3-b]pyrazin-2-one is sourced from PubChem (CID 158690792), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).