InChI=1S/C23H32O8/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-17(24)15-16-30-23-20(27)18(25)19(26)21(31-23)22(28)29/h8-9,18-21,23,25-27H,2-7,10,15-16H2,1H3,(H,28,29)/b9-8+