InChI=1/C22H24N4O2/c1-24-21(27)19(16-17-8-4-2-5-9-17)20(23-22(24)28)26-14-12-25(13-15-26)18-10-6-3-7-11-18/h2-11H,12-16H2,1H3,(H,23,28)/f/h23H 97748397D2E9B4D4