InChI=1S/C24H42O9/c25-18(26)16-14-12-10-8-6-4-2-1-3-5-7-9-11-13-15-17-32-24-21(29)19(27)20(28)22(33-24)23(30)31/h1-2,19-22,24,27-29H,3-17H2,(H,25,26)(H,30,31)/b2-1+