Problem statement: Answer the multiple-choice question.
Question: Which drug has a 4.137\% 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)C1(CCCCCCOc2ccc(Cl)cc2)CO1
b: CSc1ccc(Cl)c(C(=O)Nc2ccc(OCC(N)=O)cc2)c1
Answer: a. CCOC(=O)C1(CCCCCCOc2ccc(Cl)cc2)CO1
{#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)C1(CCCCCCOc2ccc(Cl)cc2)CO1
CCOC(=O)C1(CCCCCCOc2ccc(Cl)cc2)CO1
ethyl 2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate