InChI=1S/C20H26O9/c1-2-3-4-5-6-11-27-19(26)12-7-9-13(10-8-12)28-20-16(23)14(21)15(22)17(29-20)18(24)25/h2,7-10,14-17,20-23H,1,3-6,11H2,(H,24,25)