InChI=1S/C22H20O10/c1-29-11-4-2-10(3-5-11)14-9-30-15-8-12(6-7-13(15)16(14)23)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)