InChI=1S/C23H23NO9/c1-31-17-9-12-5-6-24-15(14(12)10-16(17)25)8-11-3-2-4-13(7-11)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)