Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a 15.947\% 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] CCOc1ccccc1CN1CCNC(=O)C1CC(=O)NCc1ccccn1
[b] Nc1cnn(-c2ccccc2)c(=O)c1Cl
Answer: b. Nc1cnn(-c2ccccc2)c(=O)c1Cl
{#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#}
Nc1cnn(-c2ccccc2)c(=O)c1Cl
Nc1cnn(-c2ccccc2)c(=O)c1Cl
5-amino-4-chloro-2-phenylpyridazin-3-one