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