Using CC(=O)[O-], O=[N+]([O-])c1cc(C(F)(F)F)ccc1CCl to produce CC(=O)OCc1ccc(C(F)(F)F)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.