InChI=1S/C28H42O4/c1-20(2)6-14-27(24(19-29)12-13-26-5-4-16-32-26)23-11-10-22-9-7-21(17-25(22)18-23)8-15-28(30)31-3/h4-6,14,16-17,20,22-25,27,29H,7-13,15,18-19H2,1-3H3/b14-6+