InChI=1S/C22H38O9/c23-15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-16(24)30-22-19(27)17(25)18(26)20(31-22)21(28)29/h1,3,17-20,22-23,25-27H,2,4-15H2,(H,28,29)/b3-1-