Cc1cnc2cnc(N)nc2n1    mol4739    0_1
Cc1cnc2c[nH+]c(N)nc2n1    mol4739    1_1
Cc1cnc2cnc(N)[nH+]c2n1    mol4739    1_2
Cc1cnc2cnc(N)nc2[nH+]1    mol4739    1_3
Cc1c[nH+]c2cnc(N)nc2n1    mol4739    1_4
Cc1cnc2cnc([NH3+])nc2n1    mol4739    1_5