Task: Answer the multiple-choice question.
Question: Which drug exhibits a 5.054\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a CCOC(=O)c1nc(-c2ccc(OC)c(OC)c2)cnc1C#N
b N#CCCn1cc(C(=O)Nc2ccc(C(=O)O)cc2)c(-c2cccc(Br)c2)n1
Answer: a. CCOC(=O)c1nc(-c2ccc(OC)c(OC)c2)cnc1C#N
{#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)c1nc(-c2ccc(OC)c(OC)c2)cnc1C#N
CCOC(=O)c1nc(-c2ccc(OC)c(OC)c2)cnc1C#N
ethyl 3-cyano-6-(3,4-dimethoxyphenyl)pyrazine-2-carboxylate