InChI=1S/C21H30O9/c1-9(2)11-4-5-21(7-11)10(3)17(13(23)6-12(21)8-22)29-20-16(26)14(24)15(25)18(30-20)19(27)28/h6,10-11,14-18,20,22,24-26H,1,4-5,7-8H2,2-3H3,(H,27,28)