Cn1nnc2ncnc(N)c21    mol8343    0_1
Cn1n[nH+]c2ncnc(N)c21    mol8343    1_1
Cn1[nH+]nc2ncnc(N)c21    mol8343    1_2
Cn1nnc2[nH+]cnc(N)c21    mol8343    1_3
Cn1nnc2ncnc([NH3+])c21    mol8343    1_4
Cn1nnc2nc[nH+]c(N)c21    mol8343    1_5