Task: Answer the multiple-choice question.
Question: Which drug exhibits a 12.548\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] C=CCN1CCN(C(=O)c2oc3ccccc3c2C)CC1
[b] Cc1ccc(N2C(N)=C(C#N)C3(C(=O)N(C)c4ccccc43)C3=C2CC(C)(C)CC3=O)cc1Cl
Answer: a. C=CCN1CCN(C(=O)c2oc3ccccc3c2C)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#}
C=CCN1CCN(C(=O)c2oc3ccccc3c2C)CC1
C=CCN1CCN(C(=O)c2oc3ccccc3c2C)CC1
(3-methyl-1-benzofuran-2-yl)-(4-prop-2-enylpiperazin-1-yl)methanone