Task: Answer the MCQ question.
Question: Which drug exhibits a 4.181\% 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 O=C(c1ccc(Cl)cc1Cl)N1CCC(c2nc3c(nnn3Cc3ccco3)c(=O)[nH]2)CC1
b O=C(CSc1cccc[n+]1[O-])c1cc(Cl)ccc1Cl
Answer: b. O=C(CSc1cccc[n+]1[O-])c1cc(Cl)ccc1Cl
{#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=C(CSc1cccc[n+]1[O-])c1cc(Cl)ccc1Cl
O=C(CSc1cccc[n+]1[O-])c1cc(Cl)ccc1Cl
1-(2,5-dichlorophenyl)-2-(1-oxidopyridin-1-ium-2-yl)sulfanylethanone