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