InChI=1S/C22H22O12/c1-31-9-4-2-3-8(5-9)19-16(26)14(24)13-11(23)6-10(7-12(13)33-19)32-22-18(28)15(25)17(27)20(34-22)21(29)30/h2-7,15-20,22-23,25-28H,1H3,(H,29,30)