Task: Answer the MCQ question.
Question: Which drug exhibits a 12.573\% 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 COc1ccc(OC)c(-c2cc(C3CCN(c4cc(Cl)nc(N)n4)CC3)[nH]n2)c1
b CC1=C(C)NC(=S)SC1
Answer: b. CC1=C(C)NC(=S)SC1
{#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#}
CC1=C(C)NC(=S)SC1
CC1=C(C)NC(=S)SC1
4,5-dimethyl-3,6-dihydro-1,3-thiazine-2-thione