InChI=1S/C20H30O9/c1-3-4-9-27-16(22)8-6-12-5-7-13(14(10-12)26-2)28-20-19(25)18(24)17(23)15(11-21)29-20/h5,7,10,15,17-21,23-25H,3-4,6,8-9,11H2,1-2H3