Using COC(=O)c1cc(-c2ccc(OCc3ccccc3)cc2OC)cc(C(=O)OC)n1 to produce COC(=O)c1cc(-c2ccc(O)cc2OC)cc(C(=O)OC)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.