InChI=1S/C20H22O13/c1-4-6(5(2)21)10(23)8-7(9(4)22)11(24)17(31-3)15(28)16(8)32-20-14(27)12(25)13(26)18(33-20)19(29)30/h8,12-14,16,18,20,22,25-28H,1-3H3,(H,29,30)