Nc1cc(N)nc(O)n1    mol4143    0_1
Nc1cc([NH3+])nc([O-])n1    mol4143    0_2
[NH3+]c1cc([NH3+])nc([O-])n1    mol4143    1_1
Nc1cc([NH3+])nc(O)n1    mol4143    1_2
Nc1cc(N)[nH+]c(O)n1    mol4143    1_3
Nc1cc(N)nc([O-])n1    mol4143    -1_1