InChI=1S/C21H32O9/c1-9(2)11-4-5-21(7-11)10(3)6-13(23)17(12(21)8-22)29-20-16(26)14(24)15(25)18(30-20)19(27)28/h10-12,14-18,20,22,24-26H,1,4-8H2,2-3H3,(H,27,28)