Task: Answer the multiple-choice question.
Query: Which drug exhibits a 0.499\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: COc1cccc2[nH]c3c(=O)n(CCCN4CCOCC4)cnc3c12
b: COc1ccc(C(=O)CC(=O)Nc2ccc([N+](=O)[O-])cc2)cc1
c: Cc1cc(C)c(C)c(S(=O)(=O)N2CCN(C)CC2)c1C
d: CCCC[n+]1c(C)sc2ccc(C)cc21.[Cl-]
Answer: a. COc1cccc2[nH]c3c(=O)n(CCCN4CCOCC4)cnc3c12
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COc1cccc2[nH]c3c(=O)n(CCCN4CCOCC4)cnc3c12
COc1cccc2[nH]c3c(=O)n(CCCN4CCOCC4)cnc3c12
9-methoxy-3-(3-morpholin-4-ylpropyl)-5H-pyrimido[5,4-b]indol-4-one