Task: Answer the MCQ question.
Query: Which compound exhibits a -23.524\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a O=C(CN1CCOCC1)N1CCN(c2ccc([N+](=O)[O-])cc2)CC1
b COc1ccc(N2CCn3c2nc2c3c(=O)n(CCCc3ccccc3)c(=O)n2C)c(OC)c1
c Cc1ccc(Cl)c(OC(=O)c2nn(C(C)C)c(=O)c3ccccc23)c1
Answer: a. O=C(CN1CCOCC1)N1CCN(c2ccc([N+](=O)[O-])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#}
O=C(CN1CCOCC1)N1CCN(c2ccc([N+](=O)[O-])cc2)CC1
O=C(CN1CCOCC1)N1CCN(c2ccc([N+](=O)[O-])cc2)CC1
2-morpholin-4-yl-1-[4-(4-nitrophenyl)piperazin-1-yl]ethanone