Using [N-]=[N+]=[N-], CC(=O)OC[C@H]1O[C@@H](n2cnc(C(=O)CCl)c2N)[C@H](Cl)[C@@H]1OC(C)=O to produce CC(=O)OC[C@H]1O[C@@H](n2cnc(C(=O)CN=[N+]=[N-])c2N)[C@H](Cl)[C@@H]1OC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.