Task: Answer the MCQ question.
Question: Which drug has a 18.261% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. CCCCn1c(-c2ccccc2)nc2c(=O)n(C)c(=O)[nH]c21
b. Cc1ccc(S(=O)(=O)N(C)c2ccc(OCc3cccc(C)c3)cc2)cc1
Answer: a. CCCCn1c(-c2ccccc2)nc2c(=O)n(C)c(=O)[nH]c21
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CCCCn1c(-c2ccccc2)nc2c(=O)n(C)c(=O)[nH]c21
CCCCn1c(-c2ccccc2)nc2c(=O)n(C)c(=O)[nH]c21
9-butyl-1-methyl-8-phenyl-3H-purine-2,6-dione