InChI=1S/C18H28O2/c1-2-3-11-14-17-15-12-9-7-5-4-6-8-10-13-16-18(19)20-17/h3,7,9,11-12,15,17H,2,4-6,8,10,13-14,16H2,1H3/b9-7-,11-3-,15-12+/t17-/m0/s1