InChI=1S/C21H30O10/c1-19(2)4-9-3-10(7-22)21(12(24)6-20(21,8-23)11(9)5-19)31-18-15(27)13(25)14(26)16(30-18)17(28)29/h3,7,9,11-16,18,23-27H,4-6,8H2,1-2H3,(H,28,29)