Using O=N[O-], NNC(=O)c1cn(C2CCN(Cc3ccccc3)C2)nn1 to produce [N-]=[N+]=NC(=O)c1cn(C2CCN(Cc3ccccc3)C2)nn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.