Task: Answer the multiple-choice question.
Query: Which drug has a 13.876\% 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) COc1ccc(N(CC(=O)N2CCc3ccccc32)S(=O)(=O)c2c(C)noc2C)cc1
(b) COc1ccc(NC(=O)COC(=O)c2ccc([N+](=O)[O-])o2)cc1Cl
Answer: b. COc1ccc(NC(=O)COC(=O)c2ccc([N+](=O)[O-])o2)cc1Cl
{#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#}
[2-(3-chloro-4-methoxyanilino)-2-oxoethyl] 5-nitrofuran-2-carboxylate