InChI=1S/C20H26O9/c1-4-5-11-6-7-12(27-14(21)8-10(2)3)13(9-11)28-20-17(24)15(22)16(23)18(29-20)19(25)26/h4,6-7,9-10,15-18,20,22-24H,1,5,8H2,2-3H3,(H,25,26)