InChI=1S/C20H28O9/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/h7-10,14-17,20-23H,2-6,11H2,1H3,(H,24,25)