InChI=1S/C23H23NO9/c1-10(9-25)4-5-13-12(3)20-16(7-14(13)26)32-21-18(23(31)33-20)11(2)6-15(27)19(21)22(30)24-8-17(28)29/h4,6-7,25-27H,5,8-9H2,1-3H3,(H,24,30)(H,28,29)