InChI=1S/C21H32O8/c1-11(9-10-22)5-7-13-12(2)6-8-14(21(13,3)4)28-20-17(25)15(23)16(24)18(29-20)19(26)27/h9-10,14-18,20,23-25H,5-8H2,1-4H3,(H,26,27)/b11-9-