Task: Answer the multiple choice question.
Question: Which drug exhibits a 1.149\% 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 additional words.
Options:
(a) O=C(/C=C/c1ccccc1)Oc1cccc2cccnc12
(b) CCc1nc(SCC#N)c(C#N)cc1C
Answer: b. CCc1nc(SCC#N)c(C#N)cc1C
{#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#}
CCc1nc(SCC#N)c(C#N)cc1C
CCc1nc(SCC#N)c(C#N)cc1C
2-(cyanomethylsulfanyl)-6-ethyl-5-methylpyridine-3-carbonitrile