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