Task: Answer the multiple-choice question.
Question: Which drug exhibits a -21.511% 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 other words.
Options:
a CN1CC(=O)N2C(c3cccc([N+](=O)[O-])c3)c3[nH]c4ccccc4c3C[C@H]2C1=O
b CCN(c1ccc(NS(=O)(=O)c2cc(Cl)ccc2Cl)cc1)C(C)C
c O=C(Nc1nccs1)c1ccccc1Br
d COc1ccc(N2C(=O)C(CC(=O)Nc3ccccc3)N(Cc3ccc(OC)c(OC)c3)C2=O)cc1
Answer: c. O=C(Nc1nccs1)c1ccccc1Br
{#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=C(Nc1nccs1)c1ccccc1Br
O=C(Nc1nccs1)c1ccccc1Br
2-bromo-N-(1,3-thiazol-2-yl)benzamide