Using CI, C=CC(C)(CCC=C(C)C)OC(=O)CC(=O)c1ccc2ccccc2c1 to produce C=CC(C)(CCC=C(C)C)OC(=O)C(C)C(=O)c1ccc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.