Task: Answer the multiple-choice question.
Question: Which drug exhibits a -4.428% 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(C1CCC1)N1CCN(c2ccccc2)CC1
b CCNc1c([N+](=O)[O-])ncn1C
c CC(CN1CCCC1)OC(=O)c1cccc(F)c1.Cl
Answer: b. CCNc1c([N+](=O)[O-])ncn1C
{#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#}
CCNc1c([N+](=O)[O-])ncn1C
CCNc1c([N+](=O)[O-])ncn1C
N-ethyl-3-methyl-5-nitroimidazol-4-amine