Task: Answer the multiple choice question.
Query: Which drug exhibits a -19.787% 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: Nc1cc(-c2cccc([N+](=O)[O-])c2)[nH]n1
b: COc1cccc(N=Nc2ccc(O)c3ncccc23)c1
c: COc1cc(OC)nc(Oc2ccccc2C(=O)Oc2cccc(C)c2)n1
Answer: a. Nc1cc(-c2cccc([N+](=O)[O-])c2)[nH]n1
{#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#}
Nc1cc(-c2cccc([N+](=O)[O-])c2)[nH]n1
Nc1cc(-c2cccc([N+](=O)[O-])c2)[nH]n1
[3-(3-amino-1H-pyrazol-5-yl)phenyl]-oxido-oxoazanium