InChI=1S/C23H23NO9/c1-31-16-9-12-6-7-24-15(8-11-2-4-13(25)5-3-11)14(12)10-17(16)32-23-20(28)18(26)19(27)21(33-23)22(29)30/h2-7,9-10,18-21,23,25-28H,8H2,1H3,(H,29,30)