InChI=1S/C28H34O8/c1-15-8-10-21-27(3,4)26(31)20(35-16(2)29)13-28(21,5)18(15)14-34-24-19(32-6)12-17-9-11-22(30)36-23(17)25(24)33-7/h9,11-12,18,20-21H,1,8,10,13-14H2,2-7H3