Problem statement: Answer the multiple-choice question.
Query: Which drug has a 6.433\% 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-]C1=N/[N+](=C/c2ccccc2)CC1
b: CCn1cc(CN2CCN(Cc3ccccc3)C(CCO)C2)c2ccccc21
Answer: a. [O-]C1=N/[N+](=C/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#}
[O-]C1=N/[N+](=C/c2ccccc2)CC1
[O-]C1=N/[N+](=C/c2ccccc2)CC1
(2E)-2-benzylidene-3,4-dihydropyrazol-2-ium-5-olate