InChI=1S/C21H20O10/c1-28-14-7-10(22)3-5-12(14)15-6-9-2-4-11(8-13(9)30-15)29-21-18(25)16(23)17(24)19(31-21)20(26)27/h2-8,16-19,21-25H,1H3,(H,26,27)