InChI=1S/C21H26O11/c1-21(2,8-22)18(32-20-15(26)13(24)14(25)17(31-20)19(27)28)12-10(29-3)6-4-9-5-7-11(23)30-16(9)12/h4-7,13-15,17-18,20,22,24-26H,8H2,1-3H3,(H,27,28)