InChI=1/C20H27N3O2/c24-19(21-16-8-9-16)15-10-12-23(13-11-15)20(25)22-18-7-3-5-14-4-1-2-6-17(14)18/h3,5,7,15-16H,1-2,4,6,8-13H2,(H,21,24)(H,22,25)/f/h21-22H 0CB8503FCE9E0ED0