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