InChI=1S/C26H28O5/c1-14(2)6-7-16-19(27)11-22-23(24(16)28-5)25-18(13-29-22)17-10-15-8-9-26(3,4)31-20(15)12-21(17)30-25/h6,8-12,18,25,27H,7,13H2,1-5H3