Task: Answer the MCQ question.
Question: Which drug exhibits a 17.486\% 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 other words.
Options:
a) O=C(OCc1cccc([N+](=O)[O-])c1)c1ccc[nH]c1=O
b) COC(=O)c1ccc(CN2C(=O)NC3(CCC(C)CC3)C2=O)o1
c) CCCCCc1ccc(-c2cn(Cc3ccc([N+](=O)[O-])cc3)nn2)cc1
d) COc1cc2c(cc1NC(=O)C1CCCO1)oc1ccccc12
Answer: a. O=C(OCc1cccc([N+](=O)[O-])c1)c1ccc[nH]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#}
O=C(OCc1cccc([N+](=O)[O-])c1)c1ccc[nH]c1=O
O=C(OCc1cccc([N+](=O)[O-])c1)c1ccc[nH]c1=O
(3-nitrophenyl)methyl 2-oxo-1H-pyridine-3-carboxylate