InChI=1S/C22H20O12/c1-31-19-13(33-22-18(28)16(26)17(27)20(34-22)21(29)30)7-12-14(15(19)25)10(24)6-11(32-12)8-4-2-3-5-9(8)23/h2-7,16-18,20,22-23,25-28H,1H3,(H,29,30)