Task: Answer the multiple-choice question.
Question: Which compound has a 0.040% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a COc1ccccc1C(=O)Nc1ccc2c(c1)CC1(C(=O)N(C)C(=O)N(C)C1=O)C1CCCN21
b CCCCn1c(O)c(C(C)=NCCc2ccccc2)c(=O)[nH]c1=O
Answer: b. CCCCn1c(O)c(C(C)=NCCc2ccccc2)c(=O)[nH]c1=O
{#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(O)c(C(C)=NCCc2ccccc2)c(=O)[nH]c1=O
CCCCn1c(O)c(C(C)=NCCc2ccccc2)c(=O)[nH]c1=O
1-butyl-6-hydroxy-5-[C-methyl-N-(2-phenylethyl)carbonimidoyl]pyrimidine-2,4-dione