InChI=1/C19H20N8O/c20-11-14-4-5-16(21-12-14)26-9-6-15(7-10-26)23-19(28)22-13-18-25-24-17-3-1-2-8-27(17)18/h1-5,8,12,15H,6-7,9-10,13H2,(H2,22,23,28)/f/h22-23H 0FAB1306D55D5E77