InChI=1S/C23H30O9/c1-13(2)11-16(31-23-19(26)17(24)18(25)20(32-23)21(27)28)12-14(3)9-10-30-22(29)15-7-5-4-6-8-15/h4-9,11,16-20,23-26H,10,12H2,1-3H3,(H,27,28)/b14-9-