N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide

C137H146N50O5 — CID 158518497

About N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide

N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide (PubChem CID 158518497) has the molecular formula C137H146N50O5 and a molecular weight of 2573.02 g/mol. Its IUPAC name is N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide.

Molecular Properties

• Compound Name: N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide
• PubChem CID: 158518497
• Molecular Formula: C137H146N50O5
• Molecular Weight: 2573.02 g/mol
• Exact Mass: 2571.27
• IUPAC Name: N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide
• SMILES: CCCCC(=O)Nc1cncc(-c2cnc3n[nH]c(-c4nc5c(N6CCN(C)CC6)cncc5[nH]4)c3c2)c1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CC7)c6)cc45)nc23)CC1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CCC7)c6)cc45)nc23)CC1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CCCC7)c6)cc45)nc23)CC1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CCCCC7)c6)cc45)nc23)CC1
• InChI: InChI=1S/C29H32N10O.C28H30N10O.C27H28N10O.C27H30N10O.C26H26N10O/c1-38-7-9-39(10-8-38)24-17-31-16-23-26(24)35-28(34-23)25-22-12-20(14-32-27(22)37-36-25)19-11-21(15-30-13-19)33-29(40)18-5-3-2-4-6-18;1-37-6-8-38(9-7-37)23-16-30-15-22-25(23)34-27(33-22)24-21-11-19(13-31-26(21)36-35-24)18-10-20(14-29-12-18)32-28(39)17-4-2-3-5-17;1-36-5-7-37(8-6-36)22-15-29-14-21-24(22)33-26(32-21)23-20-10-18(12-30-25(20)35-34-23)17-9-19(13-28-11-17)31-27(38)16-3-2-4-16;1-3-4-5-23(38)31-19-10-17(12-28-14-19)18-11-20-24(34-35-26(20)30-13-18)27-32-21-15-29-16-22(25(21)33-27)37-8-6-36(2)7-9-37;1-35-4-6-36(7-5-35)21-14-28-13-20-23(21)32-25(31-20)22-19-9-17(11-29-24(19)34-33-22)16-8-18(12-27-10-16)30-26(37)15-2-3-15/h11-18H,2-10H2,1H3,(H,33,40)(H,34,35)(H,32,36,37);10-17H,2-9H2,1H3,(H,32,39)(H,33,34)(H,31,35,36);9-16H,2-8H2,1H3,(H,31,38)(H,32,33)(H,30,34,35);10-16H,3-9H2,1-2H3,(H,31,38)(H,32,33)(H,30,34,35);8-15H,2-7H2,1H3,(H,30,37)(H,31,32)(H,29,33,34)
• InChIKey: HLXREORCIMARRL-UHFFFAOYSA-N
• XLogP: 18.41
• TPSA: 658.05 Ų
• H-Bond Donors: 15
• H-Bond Acceptors: 40
• Rotatable Bonds: 27
• Heavy Atoms: 192
• Complexity: —

Lipinski Rule of Five

4 violations

Rule	Value
MW ≤ 500	2573.02
LogP ≤ 5	18.41
H-Bond Donors ≤ 5	15
H-Bond Acceptors ≤ 10	40

Frequently Asked Questions

What is the IUPAC name of N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide?

The IUPAC name of N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide (CID 158518497) is N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide.

What is the SMILES notation for N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide?

The canonical SMILES for N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide is CCCCC(=O)Nc1cncc(-c2cnc3n[nH]c(-c4nc5c(N6CCN(C)CC6)cncc5[nH]4)c3c2)c1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CC7)c6)cc45)nc23)CC1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CCC7)c6)cc45)nc23)CC1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CCCC7)c6)cc45)nc23)CC1.CN1CCN(c2cncc3[nH]c(-c4[nH]nc5ncc(-c6cncc(NC(=O)C7CCCCC7)c6)cc45)nc23)CC1.

What is the InChIKey of N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide?

The InChIKey is HLXREORCIMARRL-UHFFFAOYSA-N. The full InChI is InChI=1S/C29H32N10O.C28H30N10O.C27H28N10O.C27H30N10O.C26H26N10O/c1-38-7-9-39(10-8-38)24-17-31-16-23-26(24)35-28(34-23)25-22-12-20(14-32-27(22)37-36-25)19-11-21(15-30-13-19)33-29(40)18-5-3-2-4-6-18;1-37-6-8-38(9-7-37)23-16-30-15-22-25(23)34-27(33-22)24-21-11-19(13-31-26(21)36-35-24)18-10-20(14-29-12-18)32-28(39)17-4-2-3-5-17;1-36-5-7-37(8-6-36)22-15-29-14-21-24(22)33-26(32-21)23-20-10-18(12-30-25(20)35-34-23)17-9-19(13-28-11-17)31-27(38)16-3-2-4-16;1-3-4-5-23(38)31-19-10-17(12-28-14-19)18-11-20-24(34-35-26(20)30-13-18)27-32-21-15-29-16-22(25(21)33-27)37-8-6-36(2)7-9-37;1-35-4-6-36(7-5-35)21-14-28-13-20-23(21)32-25(31-20)22-19-9-17(11-29-24(19)34-33-22)16-8-18(12-27-10-16)30-26(37)15-2-3-15/h11-18H,2-10H2,1H3,(H,33,40)(H,34,35)(H,32,36,37);10-17H,2-9H2,1H3,(H,32,39)(H,33,34)(H,31,35,36);9-16H,2-8H2,1H3,(H,31,38)(H,32,33)(H,30,34,35);10-16H,3-9H2,1-2H3,(H,31,38)(H,32,33)(H,30,34,35);8-15H,2-7H2,1H3,(H,30,37)(H,31,32)(H,29,33,34).

What are the key properties of N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide?

N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide has a molecular weight of 2573.02 g/mol, XLogP of 18.41, 27 rotatable bonds, 15 hydrogen bond donors, and 40 hydrogen bond acceptors.

Where does this data come from?

All data for N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclobutanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclohexanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopentanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]cyclopropanecarboxamide;N-[5-[3-[7-(4-methylpiperazin-1-yl)-3H-imidazo[4,5-c]pyridin-2-yl]-2H-pyrazolo[3,4-b]pyridin-5-yl]-3-pyridinyl]pentanamide is sourced from PubChem (CID 158518497), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).