InChI=1S/C23H38O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-18-22-19-17-20-23(24)21-22/h7-8,17,19-21,24H,2-6,9-16,18H2,1H3/b8-7-