InChI=1S/C23H26O4/c1-14(2)4-7-17-8-9-18(13-20(17)25)22-15(3)21(27-23(22)26)12-16-5-10-19(24)11-6-16/h4-6,8-11,13,15,21-22,24-25H,7,12H2,1-3H3