InChI=1S/C20H19NO10/c1-29-16-11-8(7-4-2-3-5-10(7)21-11)6-9(12(16)22)19(28)31-20-15(25)13(23)14(24)17(30-20)18(26)27/h2-6,13-15,17,20-25H,1H3,(H,26,27)