InChI=1S/C19H16O11/c20-6-1-2-7-8-3-4-10(21)15(14(8)28-18(27)9(7)5-6)29-19-13(24)11(22)12(23)16(30-19)17(25)26/h1-5,11-13,16,19-24H,(H,25,26)