[NH3+]c1nc([O-])ncc1[N+](=O)[O-]    mol4091    0_1
Nc1nc(O)ncc1[N+](=O)[O-]    mol4091    0_2
Nc1[nH+]c(O)ncc1[N+](=O)[O-]    mol4091    1_1
Nc1nc(O)[nH+]cc1[N+](=O)[O-]    mol4091    1_2
[NH3+]c1nc(O)ncc1[N+](=O)[O-]    mol4091    1_3
Nc1nc([O-])ncc1[N+](=O)[O-]    mol4091    -1_1