Problem statement: Answer the multiple-choice question.
Question: Which drug has a 5.193\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: O=C(NCCNc1cc(Cl)ccc1[N+](=O)[O-])c1ccco1
b: C=CCn1c(SCC(=O)NCCc2ccccc2)nnc1C(C)NC(=O)c1cccs1
c: CCCOCC1CC2(SC(=Nc3ccc(C)cc3)NC2=O)C(=O)O1
d: Cc1cn(S(=O)(=O)c2ccc(Br)c3ccccc23)cn1
Answer: a. O=C(NCCNc1cc(Cl)ccc1[N+](=O)[O-])c1ccco1
{#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(NCCNc1cc(Cl)ccc1[N+](=O)[O-])c1ccco1
O=C(NCCNc1cc(Cl)ccc1[N+](=O)[O-])c1ccco1
N-[2-(5-chloro-2-nitroanilino)ethyl]furan-2-carboxamide