InChI=1S/C28H24O8/c1-27(2)12-11-16-19(35-27)13-18(15-7-10-21(30)34-24(15)16)32-25-22-17(36-28(3,4)26(25)31)8-5-14-6-9-20(29)33-23(14)22/h5-13,25-26,31H,1-4H3