Nc1cc(N)nc(N)n1    mol4228    0_1
Nc1cc(N)[nH+]c(N)n1    mol4228    1_1
Nc1cc([NH3+])nc(N)n1    mol4228    1_2
Nc1cc(N)nc([NH3+])n1    mol4228    1_3
Nc1cc(N)[nH+]c([NH3+])n1    mol4228    2_1
Nc1cc([NH3+])nc([NH3+])n1    mol4228    2_2
Nc1cc([NH3+])[nH+]c(N)n1    mol4228    2_3
Nc1cc([NH3+])nc(N)[nH+]1    mol4228    2_4
Nc1cc(N)[nH+]c(N)[nH+]1    mol4228    2_5
Nc1nc([NH3+])cc([NH3+])n1    mol4228    2_6