Using CC(=O)OC(C(=O)O)c1ccc(Br)cc1, Nc1ccc(C(F)(F)F)cc1 to produce CC(=O)OC(C(=O)Nc1ccc(C(F)(F)F)cc1)c1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.