Using COc1ccc(-c2cc(=O)c3c(OC)cc(OCc4ccccc4)cc3o2)cc1OC to produce COc1ccc(-c2cc(=O)c3c(O)cc(O)cc3o2)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.