Problem statement: Answer the multiple-choice question.
Question: Which compound exhibits a 8.761\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a: CCCCN1CCc2c([nH]c3ccccc23)C1=O
b: COCCNC(=O)CN1CCN(C(c2ccccc2)c2ccccc2)CC1.O=C(O)C(=O)O
c: CCC(C)[C@H](NC(=O)OC(C)(C)C)C(=O)NCC1CCC(C(=O)N[C@@H](Cc2ccccc2)C(=O)O)CC1
d: CC1=C(C(=O)O)N2C(=O)C(NC(=O)c3nn(C)cc3Cl)C2SC1
Answer: a. CCCCN1CCc2c([nH]c3ccccc23)C1=O
{#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#}
CCCCN1CCc2c([nH]c3ccccc23)C1=O
CCCCN1CCc2c([nH]c3ccccc23)C1=O
2-butyl-4,9-dihydro-3H-pyrido[3,4-b]indol-1-one