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