Task: Answer the multiple-choice question.
Question: Which drug exhibits a 12.956\% 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. CCOC(=O)c1c(C)n(O)c2ccc(Cl)cc2c1=O
b. Cc1ccc(CNC(=O)C(=O)c2cn(CC(=O)N3CCOCC3)c3ccccc23)cc1
Answer: a. CCOC(=O)c1c(C)n(O)c2ccc(Cl)cc2c1=O
{#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#}
CCOC(=O)c1c(C)n(O)c2ccc(Cl)cc2c1=O
CCOC(=O)c1c(C)n(O)c2ccc(Cl)cc2c1=O
ethyl 6-chloro-1-hydroxy-2-methyl-4-oxoquinoline-3-carboxylate