InChI=1S/C20H26O11/c1-8(2)3-4-9-7-10(12(21)15(24)18(26)27)5-6-11(9)30-20-16(25)13(22)14(23)17(31-20)19(28)29/h3,5-7,12-17,20-25H,4H2,1-2H3,(H,26,27)(H,28,29)