Using CCOC(=O)C1C(O)=C(C(=O)CC)C(=O)CC1c1ccc(OCc2ccccc2)cc1 to produce CCC(=O)C1=C(O)CC(c2ccc(OCc3ccccc3)cc2)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.