Using COC(=O)C(=O)C(F)(F)F, Nc1cccc([N+](=O)[O-])c1 to produce COC(=O)C(Nc1cccc([N+](=O)[O-])c1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.