Nc1ccc(N=Nc2ccccc2)c(N)n1    mol33767    0_1
Nc1ccc(N=[NH+]c2ccccc2)c(N)n1    mol33767    1_1
Nc1ccc(N=Nc2ccccc2)c(N)[nH+]1    mol33767    1_2
Nc1nc([NH3+])ccc1N=Nc1ccccc1    mol33767    1_3
Nc1ccc(N=Nc2ccccc2)c([NH3+])n1    mol33767    1_4