InChI=1S/C21H30O11/c1-7-3-4-10-16(12-8(2)11(23)5-9(7)12)31-20(29)21(10,6-22)32-19-15(26)13(24)14(25)17(30-19)18(27)28/h8-17,19,22-26H,1,3-6H2,2H3,(H,27,28)