Nc1ncc2nccnc2n1    mol1848    0_1
Nc1ncc2nccnc2[nH+]1    mol1848    1_1
[NH3+]c1ncc2nccnc2n1    mol1848    1_2
Nc1nc2nccnc2c[nH+]1    mol1848    1_3
Nc1ncc2[nH+]ccnc2n1    mol1848    1_4
Nc1ncc2ncc[nH+]c2n1    mol1848    1_5