InChI=1S/C23H23NO9/c1-9-5-13(26)18(21(29)24-8-16(27)28)20-17(9)22(30)32-19-10(2)11(6-15-23(3,4)33-15)12(25)7-14(19)31-20/h5,7,15,25-26H,6,8H2,1-4H3,(H,24,29)(H,27,28)