InChI=1S/C22H26O11/c1-5-22(2,9-31-21-17(25)15(23)16(24)18(33-21)19(26)27)11-6-10-7-13(29-3)14(30-4)8-12(10)32-20(11)28/h5-8,15-18,21,23-25H,1,9H2,2-4H3,(H,26,27)