Task: Answer the multiple choice question.
Query: Which compound exhibits a 5.337\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) O=C(c1ccco1)N1CCN(C(=O)c2[nH]ncc2[N+](=O)[O-])CC1
(b) COc1cccc(-c2n[nH]c(=S)n2Cc2ccco2)c1OC
Answer: a. O=C(c1ccco1)N1CCN(C(=O)c2[nH]ncc2[N+](=O)[O-])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)c2[nH]ncc2[N+](=O)[O-])CC1
O=C(c1ccco1)N1CCN(C(=O)c2[nH]ncc2[N+](=O)[O-])CC1
furan-2-yl-[4-(4-nitro-1H-pyrazole-5-carbonyl)piperazin-1-yl]methanone