Using Cc1cccc(C=NNc2cc(N3CCOCC3)n3nc(OCc4ccccc4)cc3n2)c1 to produce Cc1cccc(C=NNc2cc(N3CCOCC3)n3nc(O)cc3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.