InChI=1S/C26H30O4/c1-14-10-19-13-20(26(30)25(19)15(2)21(14)6-8-27)12-18-11-17-4-5-23(29)24(17)16(3)22(18)7-9-28/h10-11,20,27-28H,4-9,12-13H2,1-3H3