Using COC(=O)c1ccc(NC(=O)c2cc(OCc3ccccc3)cc(OC(C)C)c2)nc1 to produce COC(=O)c1ccc(NC(=O)c2cc(O)cc(OC(C)C)c2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.