InChI=1S/C26H30O5/c1-18(9-8-16-26(2,3)30)12-15-21-22(27)17-20(23(24(21)28)25(29)31-4)14-13-19-10-6-5-7-11-19/h5-8,10-14,16-17,27-28,30H,9,15H2,1-4H3