Task: Answer the multiple choice question.
Question: Which compound has a 18.198\% 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 additional words.
Options:
a O=C(Cn1cnnn1)NCc1ccccc1
b Cc1cc(OC(C)C(=O)NCc2ccccn2)c2c(C)cc(=O)oc2c1
Answer: a. O=C(Cn1cnnn1)NCc1ccccc1
{#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=C(Cn1cnnn1)NCc1ccccc1
O=C(Cn1cnnn1)NCc1ccccc1
N-benzyl-2-(tetrazol-1-yl)acetamide