Problem statement: Answer the multiple choice question.
Question: Which drug has a 16.816\% 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) CCCC(C)C(=O)Nc1cc([N+](=O)[O-])ccc1Cl
(b) CCCNc1nc2c(c(=O)[nH]c(=O)n2C)n1Cc1ccc(F)cc1
Answer: a. CCCC(C)C(=O)Nc1cc([N+](=O)[O-])ccc1Cl
{#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(C)C(=O)Nc1cc([N+](=O)[O-])ccc1Cl
CCCC(C)C(=O)Nc1cc([N+](=O)[O-])ccc1Cl
[C][C][C][C][Branch1][C][C][C][=Branch1][C][=O][N][C][=C][C][Branch1][=Branch1][N+1][=Branch1][C][=O][O-1][=C][C][=C][Ring1][=Branch2][Cl]
N-(2-chloro-5-nitrophenyl)-2-methylpentanamide