Using [N-]=[N+]=[N-], COC(=O)C1(C)CCC[C@@H]2O[C@@H]21 to produce COC(=O)C1(C)CCCC(N=[N+]=[N-])C1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.