Nc1ncnc2[nH]nnc12    mol8338    0_1
Nc1ncnc2[nH][nH+]nc12    mol8338    1_1
[NH3+]c1ncnc2[nH]nnc12    mol8338    1_2
Nc1ncnc2[nH]n[nH+]c12    mol8338    1_3
Nc1nc[nH+]c2[nH]nnc12    mol8338    1_4
Nc1[nH+]cnc2[nH]nnc12    mol8338    1_5
Nc1ncnc2[n-]nnc12    mol8338    -1_1