InChI=1S/C25H22O7/c1-10(2)12-7-13-21(29)20-15(27)9-17-11(5-6-25(3,4)32-17)23(20)31-24(13)19-14(26)8-16(28)22(30)18(12)19/h5-6,8-9,12,26-28,30H,1,7H2,2-4H3