Nc1ncnc2nccnc12    mol4707    0_1
Nc1nc[nH+]c2nccnc12    mol4707    1_1
Nc1ncnc2[nH+]ccnc12    mol4707    1_2
Nc1ncnc2ncc[nH+]c12    mol4707    1_3
Nc1[nH+]cnc2nccnc12    mol4707    1_4
[NH3+]c1ncnc2nccnc12    mol4707    1_5