InChI=1S/C25H37NO9/c1-15(2)14-26-19(28)10-8-6-4-3-5-7-9-16-11-12-17(27)18(13-16)34-25-22(31)20(29)21(30)23(35-25)24(32)33/h7,9,11-13,15,20-23,25,27,29-31H,3-6,8,10,14H2,1-2H3,(H,26,28)(H,32,33)/b9-7+