Task: Answer the MCQ question.
Question: Which compound has a 21.139% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. O=C(O)C(C(O)c1ccc([N+](=O)[O-])cc1)[n+]1ccccc1.[Br-]
b. Cc1ccc(NC(=O)C2CCN(C(=O)c3ccco3)CC2)cc1
Answer: a. O=C(O)C(C(O)c1ccc([N+](=O)[O-])cc1)[n+]1ccccc1.[Br-]
{#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(O)C(C(O)c1ccc([N+](=O)[O-])cc1)[n+]1ccccc1.[Br-]
O=C(O)C(C(O)c1ccc([N+](=O)[O-])cc1)[n+]1ccccc1.[Br-]
3-hydroxy-3-(4-nitrophenyl)-2-pyridin-1-ium-1-ylpropanoic acid;bromide