InChI=1S/C22H38O9/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15(23)21(29)31-22-18(26)16(24)17(25)19(30-22)20(27)28/h13-19,22-26H,2-12H2,1H3,(H,27,28)/b14-13-