InChI=1S/C19H18O11/c1-6(17(25)26)8-5-9(20)7-3-2-4-10(11(7)12(8)21)29-19-15(24)13(22)14(23)16(30-19)18(27)28/h2-6,13-16,19,22-24H,1H3,(H,25,26)(H,27,28)