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