Using CC(=O)c1cccc(-c2ccccc2)c1O, COC(=O)C1CCOCC1 to produce O=C(CC(=O)C1CCOCC1)c1cccc(-c2ccccc2)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.