Task: Answer the MCQ question.
Question: Which compound has a -5.426\% 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 Cn1c(N2CCN(C(=O)NC34CC5CC(CC(C5)C3)C4)CC2)nc2ccccc21
b CN(CCO)c1ccc([N+](=O)[O-])cc1C(=O)O
Answer: b. CN(CCO)c1ccc([N+](=O)[O-])cc1C(=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#}
CN(CCO)c1ccc([N+](=O)[O-])cc1C(=O)O
CN(CCO)c1ccc([N+](=O)[O-])cc1C(=O)O
2-[2-hydroxyethyl(methyl)amino]-5-nitrobenzoic acid