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