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