Task: Answer the MCQ question.
Question: Which compound exhibits a -17.974\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a CCN1CCN(C(=S)c2ccc(SC)cc2)CC1
b O=C(Nc1ccc(F)c(Cl)c1)c1cc(-c2ccco2)on1
Answer: a. CCN1CCN(C(=S)c2ccc(SC)cc2)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#}
CCN1CCN(C(=S)c2ccc(SC)cc2)CC1
CCN1CCN(C(=S)c2ccc(SC)cc2)CC1
(4-ethylpiperazin-1-yl)-(4-methylsulfanylphenyl)methanethione