Task: Answer the multiple choice question.
Question: Which compound exhibits a 2.142\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) COC(=O)c1cc(OC)c(OC)cc1NCC(=O)Nc1ccc(C)cc1
b) Cc1ccc(OC(=O)C23CC4CC(CC(C4)C2)C3)c(C)n1
Answer: a. COC(=O)c1cc(OC)c(OC)cc1NCC(=O)Nc1ccc(C)cc1
{#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#}
COC(=O)c1cc(OC)c(OC)cc1NCC(=O)Nc1ccc(C)cc1
COC(=O)c1cc(OC)c(OC)cc1NCC(=O)Nc1ccc(C)cc1
methyl 4,5-dimethoxy-2-[[2-(4-methylanilino)-2-oxoethyl]amino]benzoate