InChI=1S/C23H38O4/c1-3-4-5-6-7-8-9-10-11-12-20(24)18-21(25)15-13-19-14-16-22(26)23(17-19)27-2/h14,16-17,20,24,26H,3-13,15,18H2,1-2H3