Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 22.083% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: CCOC(=O)N1CCC(N2Cc3cccc(C(=O)Nc4ccccc4OC)c3C2=O)CC1
b: O=C1OC(=O)c2cc([N+](=O)[O-])ccc21
c: COC(=O)c1nc(-c2ccc3c(n2)C(=O)C(N)=C(OC)C3=O)c(N)c(-c2ccc(OC)c(OC)c2O)c1C
Answer: b. O=C1OC(=O)c2cc([N+](=O)[O-])ccc21
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C1OC(=O)c2cc([N+](=O)[O-])ccc21
O=C1OC(=O)c2cc([N+](=O)[O-])ccc21
5-nitro-2-benzofuran-1,3-dione