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