Task: Answer the MCQ question.
Query: Which drug has a 2.630\% 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.) CCN1CCN(c2ccc(NC(=O)c3cnccn3)cc2)CC1
b.) O=C(C1COc2ccccc2O1)N1CCN(Cc2ccc3c(c2)OCO3)CC1
Answer: a. CCN1CCN(c2ccc(NC(=O)c3cnccn3)cc2)CC1
{#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#}
CCN1CCN(c2ccc(NC(=O)c3cnccn3)cc2)CC1
CCN1CCN(c2ccc(NC(=O)c3cnccn3)cc2)CC1
N-[4-(4-ethyl-1,4-diazinan-1-yl)phenyl]pyrazine-2-carboxamide