InChI=1S/C18H30O3/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17(19)18(20)21/h3-4,6-7,9-10,17,19H,2,5,8,11-16H2,1H3,(H,20,21)/b4-3-,7-6-,10-9+