Using O=[N+]([O-])c1ccc(OCC(O)CN2CCN(c3ncccn3)CC2)cc1 to produce Nc1ccc(OCC(O)CN2CCN(c3ncccn3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.