Task: Answer the MCQ question.
Question: Which compound has a 12.217\% 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] CC(=O)NCCSCCNC(C)=O
[b] Cn1c2ccccc2c(=O)c2c(=O)n(-c3ccccc3)c(-c3ccc(C(C)(C)C)cc3)nc21
Answer: a. CC(=O)NCCSCCNC(C)=O
{#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#}
CC(=O)NCCSCCNC(C)=O
CC(=O)NCCSCCNC(C)=O
N-[2-(2-acetamidoethylsulfanyl)ethyl]acetamide