Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a -2.824\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] CN1C(=O)[C@H](Cc2ccc([N+](=O)[O-])cc2)NC1=S
[b] CNc1ccccc1C(=O)OCC(=O)Nc1ccc2c(c1)OCO2
[c] COC(=O)c1ccc(-c2ccc(C(c3c(C)[nH][nH]c3=O)c3c(C)[nH][nH]c3=O)o2)cc1
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_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__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_1uM%}
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