InChI=1S/C22H20O10/c1-29-13-7-11(31-22-19(26)17(24)18(25)20(32-22)21(27)28)8-14-15(13)16(23)12(9-30-14)10-5-3-2-4-6-10/h2-9,17-20,22,24-26H,1H3,(H,27,28)