InChI=1S/C21H30O10/c1-8-4-5-10(30-18-14(24)12(22)13(23)15(31-18)17(26)27)11-16(25)21(7-20(8,11)3)9(2)6-29-19(21)28/h8,10-16,18,22-25H,2,4-7H2,1,3H3,(H,26,27)