Task: Answer the multiple choice question.
Question: Which drug exhibits a 5.160\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] CCn1c(SCC(=O)Nc2cccc(C)c2)nc2c(c1=O)SC(C)C2
[b] CN(CC(=O)Nc1ccc2c(c1)OCCO2)S(=O)(=O)c1cccc2cccnc12
Answer: a. CCn1c(SCC(=O)Nc2cccc(C)c2)nc2c(c1=O)SC(C)C2
{#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#}
2-[(3-ethyl-6-methyl-4-oxo-6,7-dihydrothieno[3,2-d]pyrimidin-2-yl)sulfanyl]-N-(3-methylphenyl)acetamide