Problem statement: Answer the multiple choice question.
Question: Which compound has a 18.824\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) CN(C)CCNc1nc2sc3c(c2c(=O)n1CCc1ccccc1)CCCCC3
b) CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(-c3ccccc3Br)o1)n2CC
Answer: b. CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(-c3ccccc3Br)o1)n2CC
{#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(-c1ccc(-c3ccccc3Br)o1)n2CC
CCCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(-c3ccccc3Br)o1)n2CC
8-[5-(2-bromophenyl)furan-2-yl]-3-butyl-7-ethylpurine-2,6-dione