InChI=1S/C20H18O10/c21-10-3-1-2-8(6-10)12-7-9-4-5-11(22)17(16(9)28-12)29-20-15(25)13(23)14(24)18(30-20)19(26)27/h1-7,13-15,18,20-25H,(H,26,27)