CNC(N)=N[N+](=O)[O-]    mol8801    0_1
CNC(N)=[NH+][N+](=O)[O-]    mol8801    1_1
CNC([NH-])=N[N+](=O)[O-]    mol8801    -1_1
C[N-]C(N)=N[N+](=O)[O-]    mol8801    -1_2