Task: Answer the multiple choice question.
Query: Which drug exhibits a 13.936\% 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) CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1cc(Cl)c(OC)c(OC)c1)n2C
b) CCOC(=O)Cc1csc(NC(=O)COc2cccc(C)c2)n1
Answer: a. CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1cc(Cl)c(OC)c(OC)c1)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#}
CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1cc(Cl)c(OC)c(OC)c1)n2C
CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1cc(Cl)c(OC)c(OC)c1)n2C
3-butyl-8-(3-chloro-4,5-dimethoxyphenyl)-7-methylpurine-2,6-dione