InChI=1S/C22H19NO9/c1-23-11-5-3-2-4-9(11)16(24)14-13(8-12-10(15(14)23)6-7-30-12)31-22-19(27)17(25)18(26)20(32-22)21(28)29/h2-8,17-20,22,25-27H,1H3,(H,28,29)