Problem statement: Answer the MCQ question.
Question: Which drug exhibits a 3.137\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: COc1cccc(C(=O)N2CCN(Cc3ccccc3[N+](=O)[O-])CC2)c1
b: OCCN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)CC1
Answer: b. OCCN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)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#}
OCCN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)CC1
OCCN1CCN(c2nc(-c3ccccc3)nc3c2oc2ccccc23)CC1
2-[4-(2-phenyl-[1]benzofuro[3,2-d]pyrimidin-4-yl)piperazin-1-yl]ethanol