InChI=1S/C21H30O9/c1-9(2)13-4-5-21(10(3)6-12(23)7-11(21)8-22)18(13)30-20-16(26)14(24)15(25)17(29-20)19(27)28/h7,10,13-18,20,22,24-26H,1,4-6,8H2,2-3H3,(H,27,28)