Cc1ncc(C#N)c(N)n1    mol7028    0_1
Cc1nc(N)c(C#N)c[nH+]1    mol7028    1_1
Cc1ncc(C#N)c([NH3+])n1    mol7028    1_2
Cc1ncc(C#N)c(N)[nH+]1    mol7028    1_3