Task: Answer the multiple-choice question.
Question: Which compound exhibits a -0.128\% 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.) CCc1ccc(CCN2C(=O)c3ccccc3C2=O)nc1
b.) CCCCOc1c(Br)cc(/C=C2\N=C(C)OC2=O)cc1OCC
Answer: a. CCc1ccc(CCN2C(=O)c3ccccc3C2=O)nc1
{#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#}
CCc1ccc(CCN2C(=O)c3ccccc3C2=O)nc1
CCc1ccc(CCN2C(=O)c3ccccc3C2=O)nc1
2-[2-(5-ethylpyridin-2-yl)ethyl]isoindole-1,3-dione