NNc1ncnc(N)c1[N+](=O)[O-] mol7076 0_1 NNc1ncnc([NH3+])c1[N+](=O)[O-] mol7076 1_1 NNc1[nH+]cnc(N)c1[N+](=O)[O-] mol7076 1_2 N[NH2+]c1ncnc(N)c1[N+](=O)[O-] mol7076 1_3 NNc1nc[nH+]c(N)c1[N+](=O)[O-] mol7076 1_4 Nc1ncnc(N[NH3+])c1[N+](=O)[O-] mol7076 1_5