Task: Answer the MCQ question.
Question: Which drug has a 31.430% 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: O=C1N(c2ccccc2)CCN1c1ccccc1
b: O=C(NC(=S)Nc1ccccc1Br)c1cccnc1
c: Cn1cc(C(=O)C(=O)N2CCOCC2)c2ccccc21
Answer: a. O=C1N(c2ccccc2)CCN1c1ccccc1
{#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#}
O=C1N(c2ccccc2)CCN1c1ccccc1
O=C1N(c2ccccc2)CCN1c1ccccc1
1,3-diphenylimidazolidin-2-one