Cc1cc(Cl)nc(N)n1    mol25740    0_1
Cc1cc(Cl)nc(N)[nH+]1    mol25740    1_1
Cc1cc(Cl)[nH+]c(N)n1    mol25740    1_2
Cc1cc(Cl)nc([NH3+])n1    mol25740    1_3