InChI=1S/C20H36O8/c1-2-3-4-5-6-7-8-9-10-11-12-13-14(21)27-20-17(24)15(22)16(23)18(28-20)19(25)26/h15-18,20,22-24H,2-13H2,1H3,(H,25,26)