Task: Answer the multiple-choice question.
Question: Which compound exhibits a 21.612% human ether-à-go-go related gene (hERG) inhibition at 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) CCCCNC(=O)Nc1c(C)cc(SC#N)cc1C
(b) Fc1ccc(C2c3[nH]c4ccccc4c3CCN2CCCn2cccn2)cc1
Answer: a. CCCCNC(=O)Nc1c(C)cc(SC#N)cc1C
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CCCCNC(=O)Nc1c(C)cc(SC#N)cc1C
CCCCNC(=O)Nc1c(C)cc(SC#N)cc1C
[4-(butylcarbamoylamino)-3,5-dimethylphenyl] thiocyanate