Using O=C(O)c1cc(F)cc([N+](=O)[O-])c1, BrCc1ccccc1 to produce O=C(OCc1ccccc1)c1cc(F)cc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.