Using O=C(O)COc1ccc([N+](=O)[O-])cc1C(=O)NCc1ccc(Br)cc1F to produce Nc1ccc(OCC(=O)O)c(C(=O)NCc2ccc(Br)cc2F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.