InChI=1S/C28H36O8/c1-12(2)9-10-15-22(31)16(24(33)18(23(15)32)20(29)13(3)4)11-17-25(34)19(21(30)14(5)6)27(36)28(7,8)26(17)35/h9,13-14,31-33,35-36H,10-11H2,1-8H3