Task: Answer the MCQ question.
Query: Which compound exhibits a -2.591% hERG inhibition at 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. COc1ccc(OC)c(S(=O)(=O)N2CCN(C)CC2)c1
b. CC(C)CC(=O)Nc1cc([N+](=O)[O-])ccc1Cl
Answer: b. CC(C)CC(=O)Nc1cc([N+](=O)[O-])ccc1Cl
{#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#}
CC(C)CC(=O)Nc1cc([N+](=O)[O-])ccc1Cl
CC(C)CC(=O)Nc1cc([N+](=O)[O-])ccc1Cl
N-(2-chloro-5-nitrophenyl)-3-methylbutanamide