Task: Answer the multiple-choice question.
Question: Which drug has a 5.367\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] S=c1[nH]ncn1-c1ccccn1
[b] O=C(CSc1nc(C2CCCCC2)n(-c2ccccc2)n1)NCCN1C(=O)CSC1=O
Answer: a. S=c1[nH]ncn1-c1ccccn1
{#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#}
S=c1[nH]ncn1-c1ccccn1
S=c1[nH]ncn1-c1ccccn1
4-pyridin-2-yl-1H-1,2,4-triazole-5-thione