Task: Answer the multiple-choice question.
Query: Which drug exhibits a 18.532\% 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. Nc1nnnn1/N=C/c1ccc(F)cc1
b. COc1ccc(OCC(=O)NC2CCCCCCC2)cc1
Answer: a. Nc1nnnn1/N=C/c1ccc(F)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#}
Nc1nnnn1/N=C/c1ccc(F)cc1
Nc1nnnn1/N=C/c1ccc(F)cc1
1-[(E)-(4-fluorophenyl)methylideneamino]tetrazol-5-amine