Task: Answer the MCQ question.
Query: Which compound exhibits a 4.040\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: Cc1ccnc(NS(=O)(=O)c2ccc(NC(=O)c3ccc4c(c3)OCCO4)cc2)n1
b: CC1=C(C(=O)Nc2cccc([N+](=O)[O-])c2)C2(CCC(C)CC2)OC1=O
c: COc1cccc(/C=C/c2[nH]c(=O)[nH]c(=O)c2[N+](=O)[O-])c1O
Answer: b. CC1=C(C(=O)Nc2cccc([N+](=O)[O-])c2)C2(CCC(C)CC2)OC1=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#}
CC1=C(C(=O)Nc2cccc([N+](=O)[O-])c2)C2(CCC(C)CC2)OC1=O
CC1=C(C(=O)Nc2cccc([N+](=O)[O-])c2)C2(CCC(C)CC2)OC1=O
3,8-dimethyl-N-(3-nitrophenyl)-2-oxo-1-oxaspiro[4.5]dec-3-ene-4-carboxamide