Problem statement: Answer the MCQ question.
Query: Which drug has a -17.490\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. CC1CCN(CCOCCOc2ccccc2Br)CC1
b. CCN1CCN(c2nc(-c3ccccn3)nc3ccccc23)CC1
Answer: b. CCN1CCN(c2nc(-c3ccccn3)nc3ccccc23)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#}
4-(4-ethylpiperazin-1-yl)-2-pyridin-2-ylquinazoline