Task: Answer the multiple choice question.
Question: Which drug exhibits a 12.837\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] CN(C)S(=O)(=O)c1cc(C(=O)NCCCn2ccc3ccccc32)ccc1Cl
[b] COc1ccc(C(=O)Cc2ccc(OC)c(OC)c2)c(OC)c1
Answer: b. COc1ccc(C(=O)Cc2ccc(OC)c(OC)c2)c(OC)c1
{#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#}
1-(2,4-dimethoxyphenyl)-2-(3,4-dimethoxyphenyl)ethanone