InChI=1/C20H28N4O2/c1-15-9-10-18(21-12-15)23-19(25)17-8-5-11-24(14-17)20(26)22-13-16-6-3-2-4-7-16/h2-3,9-10,12,16-17H,4-8,11,13-14H2,1H3,(H,22,26)(H,21,23,25)/t16-,17-/m0/s1/f/h22-23H E11E9530E6A15B07