Task: Answer the MCQ question.
Query: Which compound exhibits a 12.921\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: Nc1nnc(SCc2cn3cc(Cl)ccc3n2)s1
b: CCCCNC(=S)N1CCn2cccc2C1c1ccccc1
c: CN1CCN(CCCNC(=S)Nc2ccc(F)c(Cl)c2)CC1
d: O=C1NC(=Nc2ccccc2)S/C1=C\C=C\c1ccco1
Answer: b. CCCCNC(=S)N1CCn2cccc2C1c1ccccc1
{#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#}
CCCCNC(=S)N1CCn2cccc2C1c1ccccc1
CCCCNC(=S)N1CCn2cccc2C1c1ccccc1
N-butyl-1-phenyl-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazine-2-carbothioamide