InChI=1S/C25H28O6/c1-13(2)5-7-15-9-17(20(28)10-18(15)26)23-12-22(30)24-21(29)11-19(27)16(25(24)31-23)8-6-14(3)4/h5-6,9-11,23,26-29H,7-8,12H2,1-4H3