Cn1c[nH+]c2c1C(=O)c1ncnc([O-])c1C2=O    mol15279    0_1
Cn1cnc2c1C(=O)c1[nH+]cnc([O-])c1C2=O    mol15279    0_2
Cn1cnc2c1C(=O)c1ncnc(O)c1C2=O    mol15279    0_3
Cn1cnc2c1C(=O)c1ncnc([O-])c1C2=O    mol15279    -1_1