Using COC1=CC(=O)C(CCC(C)C)(OCc2ccccc2)c2ccccc21 to produce CC(C)CCC1(OCc2ccccc2)C(=O)CC(=O)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.