Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a 1.253\% 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(NC(=O)CN(C)C(=O)CN2C(=O)NC3(CCCCC3)C2=O)cc1
b) CCCC(NC(=O)CNC(=O)C(C)(C)C)C(=O)O
Answer: b. CCCC(NC(=O)CNC(=O)C(C)(C)C)C(=O)O
{#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#}
CCCC(NC(=O)CNC(=O)C(C)(C)C)C(=O)O
CCCC(NC(=O)CNC(=O)C(C)(C)C)C(=O)O
N-[2-[(1-hydroxy-1-oxopentan-2-yl)amino]-2-oxoethyl]-2,2-dimethylpropanamide