InChI=1S/C19H16O13/c20-7-1-4-5-2-9(22)10(23)15(14(5)30-18(29)6(4)3-8(7)21)31-19-13(26)11(24)12(25)16(32-19)17(27)28/h1-3,11-13,16,19-26H,(H,27,28)