Using O=C([O-])C(F)(F)Cl, COC(=O)c1ccc([N+](=O)[O-])cc1O to produce COC(=O)c1ccc([N+](=O)[O-])cc1OC(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.