InChI=1S/C28H44O/c1-6-19(2)7-8-20(3)23-12-13-26(5)24-10-9-21-17-22(29)11-14-27(21)18-28(24,27)16-15-25(23,26)4/h20-21,23-24H,2,6-18H2,1,3-5H3