Using O=C(NCCNCc1cc2ccc(OCc3ccccc3)cc2o1)C12CC3CC(CC(C3)C1)C2 to produce O=C(NCCNCc1cc2ccc(O)cc2o1)C12CC3CC(CC(C3)C1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.