Using [N-]=[N+]=[N-], CC(C)(C)OC(=O)N1CC[C@@H]2O[C@H]2C1 to produce CC(C)(C)OC(=O)N1CC[C@@H](N=[N+]=[N-])[C@H](O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.