InChI=1S/C20H38O9/c1-6-26-13(27-7-2)11-12(3)9-8-10-20(4,5)29-19-16(23)14(21)15(22)17(28-19)18(24)25/h12-17,19,21-23H,6-11H2,1-5H3,(H,24,25)