InChI=1/C19H20N4O2/c20-19(24)17-3-1-2-15-13-23(21-18(15)17)16-6-4-14(5-7-16)12-22-8-10-25-11-9-22/h1-7,13H,8-12H2,(H2,20,24)/f/h20H2 C2119583AF5682E5