Task: Answer the MCQ question.
Query: Which compound has a 8.932\% 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 other words.
Options:
a) COc1ccc(C(=O)OCc2csc(C)n2)c(O)c1
b) O=c1cc(CCl)[nH]c2nc3ccccc3n12
c) Cc1ccc[n+](-c2nc([O-])sc2/C=N/Nc2ccc([N+](=O)[O-])cc2)c1
d) N#Cc1c(N)nc(N)nc1Nc1ccc(Br)cc1
Answer: b. O=c1cc(CCl)[nH]c2nc3ccccc3n12
{#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#}
O=c1cc(CCl)[nH]c2nc3ccccc3n12
O=c1cc(CCl)[nH]c2nc3ccccc3n12
2-(chloromethyl)-1H-pyrimido[1,2-a]benzimidazol-4-one