InChI=1S/C19H16O10/c20-10-6-5-8-7-3-1-2-4-9(7)18(26)27-14(8)15(10)28-19-13(23)11(21)12(22)16(29-19)17(24)25/h1-6,11-13,16,19-23H,(H,24,25)