Task: Answer the multiple-choice question.
Question: Which compound exhibits a 11.899\% 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(-n2c(SCc3cc(F)ccc3F)nc3ccccc3c2=O)cc1)N1CCOCC1
b. COc1ccccc1NC(C#N)c1ccc(Br)cc1
Answer: b. COc1ccccc1NC(C#N)c1ccc(Br)cc1
{#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#}
COc1ccccc1NC(C#N)c1ccc(Br)cc1
COc1ccccc1NC(C#N)c1ccc(Br)cc1
2-(4-bromophenyl)-2-(2-methoxyanilino)acetonitrile