Using CCOC(=O)/C=C(/C=C/C(=O)c1cc(OC)ccc1OC)c1ccccc1 to produce COc1ccc(OC)c(C(=O)/C=C/C(=C/C(=O)O)c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.