InChI=1S/C21H30O10/c1-18(2)5-9-4-10(7-22)21(29)11(6-19(21,3)20(9,28)8-18)30-17-14(25)12(23)13(24)15(31-17)16(26)27/h4,7,9,11-15,17,23-25,28-29H,5-6,8H2,1-3H3,(H,26,27)