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