Task: Answer the MCQ question.
Question: Which compound exhibits a 3.071\% 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] COC(=O)c1sc(-c2ccc(Cl)cc2)cc1N
[b] CCOc1ccc(S(=O)(=O)Nc2ccc3c(c2)c2c(n3S(=O)(=O)c3ccc(OCC)cc3)CCCC2=O)cc1
Answer: a. COC(=O)c1sc(-c2ccc(Cl)cc2)cc1N
{#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)c1sc(-c2ccc(Cl)cc2)cc1N
COC(=O)c1sc(-c2ccc(Cl)cc2)cc1N
methyl 3-amino-5-(4-chlorophenyl)thiophene-2-carboxylate