Using Cc1c(Cc2cccnc2)c2ccccc2n1CCC#N, [N-]=[N+]=[N-] to produce Cc1c(Cc2cccnc2)c2ccccc2n1CCc1nnn[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.