InChI=1S/C20H22O10/c1-20(2,8-21)7-10-11(5-3-9-4-6-12(22)29-16(9)10)28-19-15(25)13(23)14(24)17(30-19)18(26)27/h3-6,8,13-15,17,19,23-25H,7H2,1-2H3,(H,26,27)