InChI=1S/C21H30O10/c1-18(2)4-8-9(5-18)19(3)6-10(23)21(19,20(7-22)15(8)30-20)31-17-13(26)11(24)12(25)14(29-17)16(27)28/h7-15,17,23-26H,4-6H2,1-3H3,(H,27,28)