InChI=1S/C22H38O4/c1-3-5-7-9-10-11-12-13-14-16-20-26-22(24)18-17-21(23)25-19-15-8-6-4-2/h6,8,17-18H,3-5,7,9-16,19-20H2,1-2H3/b8-6-,18-17+