InChI=1S/C20H23NO10/c22-11-6-7-13(23)21(9-11)14(24)8-12(10-4-2-1-3-5-10)30-20-17(27)15(25)16(26)18(31-20)19(28)29/h1-7,11-12,15-18,20,22,25-27H,8-9H2,(H,28,29)