InChI=1S/C18H26O3/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-17(19)15-16-18(20)21/h3-10H,2,11-16H2,1H3,(H,20,21)/b4-3-,6-5+,8-7-,10-9+