Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a 17.796\% 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.) CCOC(=O)CSc1nc(Nc2ccc3c(c2)OCO3)c2ccccc2n1
b.) COC(=O)c1sc2nc(N)c(C#N)cc2c1N
Answer: b. COC(=O)c1sc2nc(N)c(C#N)cc2c1N
{#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#}
methyl 3,6-diamino-5-cyanothieno[2,3-b]pyridine-2-carboxylate