InChI=1S/C26H28O7/c1-13(2)6-8-16-23(30)18(12-20(29)26(16)32-5)25-17(9-7-14(3)4)24(31)22-19(28)10-15(27)11-21(22)33-25/h6-7,10-12,27-30H,8-9H2,1-5H3