Problem statement: Answer the MCQ question.
Query: Which compound exhibits a -2.911% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: O=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccc([N+](=O)[O-])cc1Cl
b: CCn1c(SCc2nc(-c3ccc(OC)c(OC)c3)no2)nnc1-c1cccs1
c: COc1ccc(C(C)(C)C)cc1NC(=O)COC(=O)c1ncc(Cl)c(Cl)c1Cl
Answer: a. O=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccc([N+](=O)[O-])cc1Cl
{#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=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccc([N+](=O)[O-])cc1Cl
O=C(COC(=O)c1cc[n+]([O-])cc1)Nc1ccc([N+](=O)[O-])cc1Cl
[2-(2-chloro-4-nitroanilino)-2-oxoethyl]1-oxidopyridin-1-ium-4-carboxylate