Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a -2.747\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] O=C(Nc1cccc(C(=O)O)c1)/C(=C\c1ccccc1)NC(=O)c1cccc2ccccc12
[b] CCN1CCN(Cc2ccc(C)cc2)CC1
Answer: b. CCN1CCN(Cc2ccc(C)cc2)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#}
CCN1CCN(Cc2ccc(C)cc2)CC1
CCN1CCN(Cc2ccc(C)cc2)CC1
1-ethyl-4-[(4-methylphenyl)methyl]piperazine