InChI=1/C24H26O7/c1-29-21-10-14(4-7-18(21)26)17(13-25)24(15-5-8-19(27)22(11-15)30-2)16-6-9-20(28)23(12-16)31-3/h4-12,17,24-28H,13H2,1-3H3