InChI=1S/C25H28O8/c1-13-11-25(3,33-19(29)9-15-5-7-17(27)8-6-15)22(14(2)24(31)32-4)23(30)21-16(12-26)10-18(28)20(13)21/h5-8,10,21-23,26-27,30H,2,9,11-12H2,1,3-4H3