InChI=1S/C26H28N4O3/c31-23(29-17-8-13-22(29)25(32)28-15-6-7-16-28)14-18-30-21-12-5-4-11-20(21)27-24(26(30)33)19-9-2-1-3-10-19/h1-5,9-12,22H,6-8,13-18H2/t22-/m0/s1