Using Nc1ccc(C(F)(F)F)cc1, CCOC(=O)C1(C(=O)O)CC1 to produce CCOC(=O)C1(C(=O)Nc2ccc(C(F)(F)F)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.