InChI=1/C21H24N4O/c1-15-10-8-9-13-17(15)25-19(14-18(24-25)21(2,3)4)23-20(26)22-16-11-6-5-7-12-16/h5-14H,1-4H3,(H2,22,23,26)/f/h22-23H 2647E96861AEFFD9