Task: Answer the multiple-choice question.
Question: Which compound has a -63.140\% 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] CCCCC(c1nnnn1C1CCCC1)N1CCN(C2CCCCC2)CC1
[b] CC(C)CC(=O)N1CCN(Cc2ccc(Cl)cc2)CC1
Answer: a. CCCCC(c1nnnn1C1CCCC1)N1CCN(C2CCCCC2)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#}
CCCCC(c1nnnn1C1CCCC1)N1CCN(C2CCCCC2)CC1
CCCCC(c1nnnn1C1CCCC1)N1CCN(C2CCCCC2)CC1
1-cyclohexyl-4-[1-(1-cyclopentyltetrazol-5-yl)pentyl]piperazine