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