Problem statement: Answer the MCQ question.
Query: Which drug exhibits a 2.643\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: COc1ccc(Cl)cc1NC(=O)CN1CCN(Cc2ccccc2)CC1
b: CCOCCn1c(SCc2ccccc2)nc2c1c(=O)[nH]c(=O)n2C
c: Brc1ccc(N=C(c2ccccc2)c2ccncc2)cc1
Answer: b. CCOCCn1c(SCc2ccccc2)nc2c1c(=O)[nH]c(=O)n2C
{#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#}
CCOCCn1c(SCc2ccccc2)nc2c1c(=O)[nH]c(=O)n2C
CCOCCn1c(SCc2ccccc2)nc2c1c(=O)[nH]c(=O)n2C
8-benzylsulfanyl-7-(2-ethoxyethyl)-3-methylpurine-2,6-dione