InChI=1S/C23H34O9/c1-3-5-6-7-11-16(25)13-14-17(12-9-8-10-15(24)4-2)31-23-20(28)18(26)19(27)21(32-23)22(29)30/h4,8,10,13-21,23-28H,2-3,5-7,11H2,1H3,(H,29,30)/b10-8+,14-13+