Using [N-]=[N+]=[N-], Cc1cc(NCC(C)C)c([N+](=O)[O-])c(Cl)n1 to produce Cc1cc(NCC(C)C)c([N+](=O)[O-])c2nnnn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.