InChI=1S/C23H32O9/c1-3-5-6-7-12-17(14-13-16(25)11-9-8-10-15(24)4-2)31-23-20(28)18(26)19(27)21(32-23)22(29)30/h4,13-21,23-28H,2-3,5-7,12H2,1H3,(H,29,30)/b14-13-