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