InChI=1S/C19H16O11/c1-6(8-5-10(21)7-3-2-4-9(20)11(7)12(8)22)18(28)30-19-15(25)13(23)14(24)16(29-19)17(26)27/h2-5,13-16,19-20,23-25H,1H2,(H,26,27)