Task: Answer the multiple choice question.
Query: Which compound exhibits a 2.126\% 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. COc1cccc(CNC(=O)Cc2ccc(Br)cc2)c1
b. Cc1ccc(NC(=O)CN(C)C(=O)c2ccc(Cl)nc2)cc1
Answer: b. Cc1ccc(NC(=O)CN(C)C(=O)c2ccc(Cl)nc2)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#}
Cc1ccc(NC(=O)CN(C)C(=O)c2ccc(Cl)nc2)cc1
Cc1ccc(NC(=O)CN(C)C(=O)c2ccc(Cl)nc2)cc1
6-chloro-N-methyl-N-[2-(4-methylanilino)-2-oxoethyl]pyridine-3-carboxamide