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