Using CCOC(=O)c1cc(OC)c(OCc2ccccc2)cc1C(=O)c1ccccc1 to produce COc1cc(C(=O)O)c(C(=O)c2ccccc2)cc1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.