Cn1cnc2ncnc(O)c21    mol8309    0_1
Cn1c[nH+]c2ncnc([O-])c21    mol8309    0_2
Cn1cnc2[nH+]cnc([O-])c21    mol8309    0_3
Cn1cnc2nc[nH+]c(O)c21    mol8309    1_1
Cn1c[nH+]c2ncnc(O)c21    mol8309    1_2
Cn1c[nH+]c2[nH+]cnc([O-])c21    mol8309    1_3
Cn1cnc2[nH+]cnc(O)c21    mol8309    1_4
Cn1cnc2ncnc([O-])c21    mol8309    -1_1