Problem statement: Answer the multiple-choice question.
Question: Which compound has a 5.311\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] Cn1nc(C(=O)OCC(=O)c2ccc(Br)cc2)c2ccccc2c1=O
[b] CCCc1nc2c(=O)n(C)c(=O)[nH]c2n1C
Answer: b. CCCc1nc2c(=O)n(C)c(=O)[nH]c2n1C
{#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#}
CCCc1nc2c(=O)n(C)c(=O)[nH]c2n1C
CCCc1nc2c(=O)n(C)c(=O)[nH]c2n1C
1,9-dimethyl-8-propyl-3H-purine-2,6-dione