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