Task: Answer the multiple choice question.
Question: Which compound exhibits a 19.403\% 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: Cn1c(C(=O)NCc2cccnc2)cc2sc(Cl)cc21
b: COc1ccc(Cl)cc1C(=O)N1CCN=C1SC
Answer: b. COc1ccc(Cl)cc1C(=O)N1CCN=C1SC
{#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#}
COc1ccc(Cl)cc1C(=O)N1CCN=C1SC
COc1ccc(Cl)cc1C(=O)N1CCN=C1SC
(5-chloro-2-methoxyphenyl)-(2-methylsulfanyl-4,5-dihydroimidazol-1-yl)methanone