Using CCOC(=O)COc1cc(OC)cc(OC)c1C(=O)C=Cc1ccc(OC)cc1 to produce COc1ccc(C=CC(=O)c2c(OC)cc(OC)cc2OCC(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.