Nc1ccc2nccnc2c1    mol4666    0_1
[NH3+]c1ccc2nccnc2c1    mol4666    1_1
Nc1ccc2[nH+]ccnc2c1    mol4666    1_2
Nc1ccc2ncc[nH+]c2c1    mol4666    1_3