Using CCOC(=O)c1cccc2nc(CC)n(Cc3ccc(-c4ccccc4C#N)cc3)c12, [N-]=[N+]=[N-] to produce CCOC(=O)c1cccc2nc(CC)n(Cc3ccc(-c4ccccc4-c4nnn[nH]4)cc3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.