Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a -8.997\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] COc1ccccc1CNC(=O)CCCn1c(=O)c2ccccc2n(CC(=O)NC2CCCC2)c1=O
[b] CCN1CCN(C2=C(Cl)C(=O)N(Cc3ccccc3)C2=O)CC1
[c] Cc1cc(N(CC(=O)O)S(C)(=O)=O)ccc1Br
Answer: b. CCN1CCN(C2=C(Cl)C(=O)N(Cc3ccccc3)C2=O)CC1
{#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-benzyl-3-chloro-4-(4-ethylpiperazin-1-yl)pyrrole-2,5-dione