InChI=1S/C21H30O11/c1-8-3-11-20(6-23,16(28)12(8)24)19(2)4-9(17(32-11)21(19)7-29-21)30-18-15(27)14(26)13(25)10(5-22)31-18/h3,9-11,13-18,22-23,25-28H,4-7H2,1-2H3