Task: Answer the MCQ question.
Query: Which drug exhibits a 5.003\% 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.) CN1CCN(/N=C/c2nc(-c3ccccc3Cl)n3ccccc23)CC1
b.) CCOC(=O)N1CCN(c2nc(-c3ccccc3)c3ccccc3n2)CC1
c.) CC1=NCC(C)c2c1[nH]c1ccccc21
Answer: b. CCOC(=O)N1CCN(c2nc(-c3ccccc3)c3ccccc3n2)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#}
CCOC(=O)N1CCN(c2nc(-c3ccccc3)c3ccccc3n2)CC1
CCOC(=O)N1CCN(c2nc(-c3ccccc3)c3ccccc3n2)CC1
ethyl 4-(4-phenylquinazolin-2-yl)piperazine-1-carboxylate