InChI=1/C19H20N8O/c1-14-11-15(7-8-17(14)27-13-22-24-25-27)23-19(28)20-9-4-10-26-12-21-16-5-2-3-6-18(16)26/h2-3,5-8,11-13H,4,9-10H2,1H3,(H2,20,23,28)/f/h20,23H 659EEA2366DE6B14