InChI=1S/C21H26O11/c1-21(8-22,9-30-20-16(26)14(24)15(25)18(32-20)19(27)28)7-11-12(29-2)5-3-10-4-6-13(23)31-17(10)11/h3-6,14-16,18,20,22,24-26H,7-9H2,1-2H3,(H,27,28)