InChI=1S/C20H26O11/c1-9(8-21)2-4-11-6-10(3-5-12(11)22)7-13(23)19(29)31-20-16(26)14(24)15(25)17(30-20)18(27)28/h2-3,5-6,13-17,20-26H,4,7-8H2,1H3,(H,27,28)