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