Using CC(=O)CC(=O)OC(C)(C)C, CCc1ccc(CC(=O)Cl)cc1 to produce CCc1ccc(CC(=O)C(C(C)=O)C(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.