InChI=1S/C18H28O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2,6-7,9-10,12-13H,1,3-5,8,11,14-17H2,(H,19,20)/b7-6-,10-9-,13-12-