Using CSc1ncc2c(=O)n(-c3ccccc3Cl)c(Cl)nc2n1, [N-]=[N+]=[N-] to produce CSc1ncc2c(=O)n(-c3ccccc3Cl)c3nnnn3c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.