Nc1cc(N)c2cccnc2n1    mol8001    0_1
Nc1cc([NH3+])nc2ncccc12    mol8001    1_1
Nc1cc(N)c2cccnc2[nH+]1    mol8001    1_2
Nc1cc(N)c2ccc[nH+]c2n1    mol8001    1_3
Nc1cc([NH3+])c2cccnc2n1    mol8001    1_4