InChI=1S/C26H30O4/c1-14(2)6-8-17-22(27)11-10-19-24(17)29-13-21-20-12-16(5)23(28)18(9-7-15(3)4)25(20)30-26(19)21/h6-7,10-12,21,26-28H,8-9,13H2,1-5H3/t21-,26-/m0/s1