Using FC(F)(F)c1ccc(CBr)cc1, CCOC(=O)CC(=O)c1ccc(OC)cc1 to produce CCOC(=O)C(Cc1ccc(C(F)(F)F)cc1)C(=O)c1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.