Using COc1cc2nc(N3CCCN(C(=O)N4CCOCC4)CC3)nc(N)c2cc1OCc1ccccc1 to produce COc1cc2nc(N3CCCN(C(=O)N4CCOCC4)CC3)nc(N)c2cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.