InChI=1S/C26H26O7/c1-12(2)6-7-14-16(27)10-18(29)22-24(30)23-21(8-13(3)4)32-19-11-20(31-5)17(28)9-15(19)26(23)33-25(14)22/h6,8-11,21,27-29H,7H2,1-5H3