InChI=1S/C21H25N5O2/c1-2-26-20-17(14-24-26)19(25-16-8-10-28-11-9-16)18(13-22-20)21(27)23-12-15-6-4-3-5-7-15/h3-7,13-14,16H,2,8-12H2,1H3,(H,22,25)(H,23,27)