Task: Answer the MCQ question.
Query: Which drug exhibits a -2.455\% 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 additional words.
Options:
a: CN1C(=O)NC(=O)/C(=C\c2ccc([N+](=O)[O-])o2)C1=O
b: O=C(c1ccco1)N1CCN(C(=O)N2CCOCC2)CC1
Answer: b. O=C(c1ccco1)N1CCN(C(=O)N2CCOCC2)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(c1ccco1)N1CCN(C(=O)N2CCOCC2)CC1
O=C(c1ccco1)N1CCN(C(=O)N2CCOCC2)CC1
furan-2-yl-[4-(morpholine-4-carbonyl)piperazin-1-yl]methanone