InChI=1S/C25H38O4/c1-6-17(2)23(27)29-22-11-13-24(4)20(9-8-19-12-14-28-15-19)18(3)7-10-21(24)25(22,5)16-26/h6,12,20-22,26H,3,7-11,13-16H2,1-2,4-5H3