Using COC(=O)c1cc([N+](=O)[O-])c(C(F)(F)F)cc1N to produce Nc1cc(C(F)(F)F)c([N+](=O)[O-])cc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.