Nc1cnc2c(N)ncnc2n1    mol4755    0_1
Nc1ncnc2nc([NH3+])cnc12    mol4755    1_1
Nc1cnc2c([NH3+])ncnc2n1    mol4755    1_2
Nc1cnc2c(N)ncnc2[nH+]1    mol4755    1_3
Nc1cnc2c(N)[nH+]cnc2n1    mol4755    1_4
Nc1cnc2c(N)nc[nH+]c2n1    mol4755    1_5
Nc1c[nH+]c2c(N)ncnc2n1    mol4755    1_6