InChI=1S/C25H22O6/c1-24(2)8-6-15-10-14(4-5-19(15)30-24)17-12-29-23-16-7-9-25(3,13-26)31-20(16)11-18(27)21(23)22(17)28/h4-12,26-27H,13H2,1-3H3/t25-/m1/s1