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