InChI=1S/C28H31NO3/c30-26-18-22-10-13-24(20-6-2-1-3-7-20)28(25(22)19-27(26)31)21-8-11-23(12-9-21)32-17-16-29-14-4-5-15-29/h1-3,6-9,11-12,18-19,24,28,30-31H,4-5,10,13-17H2/t24-,28+/m1/s1