Cn1nc2ncnc(N)c2n1    mol8342    0_1
Cn1nc2ncnc([NH3+])c2n1    mol8342    1_1
Cn1nc2nc[nH+]c(N)c2n1    mol8342    1_2
Cn1nc2c(N)ncnc2[nH+]1    mol8342    1_3
Cn1nc2[nH+]cnc(N)c2n1    mol8342    1_4
Cn1nc2ncnc(N)c2[nH+]1    mol8342    1_5