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