InChI=1S/C28H44O4/c1-17(2)18(3)7-8-19(4)21-9-10-22-23-15-24(30)28-16-20(29)11-12-26(28,6)27(23,31-32-28)14-13-25(21,22)5/h15,17-22,29H,7-14,16H2,1-6H3