Task: Answer the MCQ question.
Query: Which drug exhibits a 9.910\% 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. CCN=C1S/C(=C\c2ccc(OC)c(OCC)c2)C(=O)N1CC
b. CCOC(=O)C1CCN(C(=O)c2cn(C)c(=O)c3cc(OC)c(OC)cc23)CC1
c. COc1ccc(NC(=O)C/C(C)=N/NC(=O)c2ccco2)c([N+](=O)[O-])c1
Answer: a. CCN=C1S/C(=C\c2ccc(OC)c(OCC)c2)C(=O)N1CC
{#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#}
CCN=C1S/C(=C\c2ccc(OC)c(OCC)c2)C(=O)N1CC
CCN=C1S/C(=C\c2ccc(OC)c(OCC)c2)C(=O)N1CC
(5Z)-5-[(3-ethoxy-4-methoxyphenyl)methylidene]-3-ethyl-2-ethylimino-1,3-thiazolidin-4-one