InChI=1S/C28H32N2O2/c31-25-11-14-27-23(21-25)15-18-30(24-7-3-1-4-8-24)28(27)22-9-12-26(13-10-22)32-20-19-29-16-5-2-6-17-29/h1,3-4,7-14,21,28,31H,2,5-6,15-20H2/t28-/m1/s1