InChI=1S/C18H30O3/c1-2-17(19)15-13-11-9-7-5-3-4-6-8-10-12-14-16-18(20)21/h3,5,9,11,13,15,17,19H,2,4,6-8,10,12,14,16H2,1H3,(H,20,21)/b5-3-,11-9-,15-13+