InChI=1S/C20H20O14/c21-8-2-7(3-9(22)13(8)24)19(31)32-5-12-15(26)16(27)17(28)20(34-12)33-11-4-6(18(29)30)1-10(23)14(11)25/h1-4,12,15-17,20-28H,5H2,(H,29,30)