Nc1c2[n-]cnc2nc[n+]1O    mol4914    0_1
Nc1c2[nH]cnc2nc[n+]1[O-]    mol4914    0_2
Nc1c2[nH]c[nH+]c2nc[n+]1[O-]    mol4914    1_1
[NH3+]c1c2[nH]cnc2nc[n+]1[O-]    mol4914    1_2
Nc1c2[nH]cnc2[nH+]c[n+]1[O-]    mol4914    1_3
Nc1c2[nH]cnc2nc[n+]1O    mol4914    1_4
Nc1c2[n-]cnc2nc[n+]1[O-]    mol4914    -1_1