Task: Answer the MCQ question.
Question: Which compound exhibits a -0.656% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CN1C(=O)[C@H](Cc2ccc([N+](=O)[O-])cc2)NC1=S
b: Cc1cccnc1-n1c(CCN2C(=O)c3ccccc3C2=O)nc2ccccc2c1=O
c: COc1ccc(-c2nc(CN3CCCCC3CCc3ccccn3)c(C)o2)cc1
d: COc1ccccc1C(=O)Nc1cc2c(ccc3ccccc32)oc1=O
Answer: a. CN1C(=O)[C@H](Cc2ccc([N+](=O)[O-])cc2)NC1=S
{#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#}
CN1C(=O)[C@H](Cc2ccc([N+](=O)[O-])cc2)NC1=S
CN1C(=O)[C@H](Cc2ccc([N+](=O)[O-])cc2)NC1=S
(5S)-3-methyl-5-[(4-nitrophenyl)methyl]-2-sulfanylideneimidazolidin-4-one