InChI=1S/C22H21N5O/c23-9-8-13-10-16(14-4-2-1-3-5-14)20(28)17(11-13)22-26-18-7-6-15(21(24)25)12-19(18)27-22/h1-7,10-12,28H,8-9,23H2,(H3,24,25)(H,26,27)/p+1