Using CCOC(=O)C(C)Oc1cc(Cl)c(-c2ccc(C(F)(F)F)n(C)c2=O)cc1[N+](=O)[O-] to produce CC1Oc2cc(Cl)c(-c3ccc(C(F)(F)F)n(C)c3=O)cc2NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.