Task: Answer the MCQ question.
Question: Which drug has a -2.079\% 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 COc1ccccc1CN1CCNC(=O)C1CC(=O)NCCCN1CCCC1=O
b Nc1ccccc1N=Nc1ccccc1N
Answer: b. Nc1ccccc1N=Nc1ccccc1N
{#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#}
Nc1ccccc1N=Nc1ccccc1N
Nc1ccccc1N=Nc1ccccc1N
2-[(2-aminophenyl)diazenyl]aniline