Problem statement: Answer the MCQ question.
Question: Which drug has a 11.973\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a.) CCCCOc1ccc(CN(CCO)CCO)cc1[N+](=O)[O-].Cl
b.) O=C(O)/C=C/C(=O)NCCc1ccccc1
c.) COCCn1c(Cc2ccccc2)nnc1SCc1nc2ccccc2c(=O)[nH]1
Answer: a. CCCCOc1ccc(CN(CCO)CCO)cc1[N+](=O)[O-].Cl
{#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#}
2-[(4-butoxy-3-nitrophenyl)methyl-(2-hydroxyethyl)amino]ethanol;hydrochloride