Problem statement: Answer the multiple choice question.
Question: Which drug exhibits a 11.803\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CN1CCN(S(=O)(=O)c2ccc(Cl)cc2)CC1
b: CCOC(=O)C1=C(c2ccccc2)OC(N)=C(C#N)C1c1ccc(Br)s1
c: C=CCCCOc1ccc(C(=O)O)cc1
d: COc1ccc(C)cc1NC(=O)Nc1cccc(C)c1
Answer: b. CCOC(=O)C1=C(c2ccccc2)OC(N)=C(C#N)C1c1ccc(Br)s1
{#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#}
ethyl 6-amino-4-(5-bromothiophen-2-yl)-5-cyano-2-phenyl-4H-pyran-3-carboxylate