Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 19.641\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CC1=NC(Nc2nc(C)c3ccccc3n2)=NC(C)(C)C1
b: FC(F)(F)c1ccc(Oc2ccc(Cl)cc2Br)nc1
Answer: b. FC(F)(F)c1ccc(Oc2ccc(Cl)cc2Br)nc1
{#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#}
FC(F)(F)c1ccc(Oc2ccc(Cl)cc2Br)nc1
FC(F)(F)c1ccc(Oc2ccc(Cl)cc2Br)nc1
2-(2-bromo-4-chlorophenoxy)-5-(trifluoromethyl)pyridine