NC1=Nc2nccnc2[C@@H](C[N+](=O)[O-])N1    mol8069    0_1
NC1=Nc2[nH+]ccnc2[C@@H](C[N+](=O)[O-])N1    mol8069    1_1
NC1=Nc2ncc[nH+]c2[C@@H](C[N+](=O)[O-])N1    mol8069    1_2
NC1=[NH+]c2nccnc2[C@@H](C[N+](=O)[O-])N1    mol8069    1_3