InChI=1S/C20H22O11/c1-20(2,7-9-10(21)5-3-8-4-6-11(22)29-15(8)9)19(28)31-18-14(25)12(23)13(24)16(30-18)17(26)27/h3-6,12-14,16,18,21,23-25H,7H2,1-2H3,(H,26,27)