Using CCOC(=O)C(F)(F)Br, O=Cc1ccc([N+](=O)[O-])cc1 to produce CCOC(=O)C(F)(F)C(O)c1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.