Using CI, CC(C)(C)OC(=O)CC(=O)CCc1ccc(-c2ccccc2)cc1 to produce CC(C(=O)CCc1ccc(-c2ccccc2)cc1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.