InChI=1S/C19H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19(20)21/h10-11,14-15H,2-9,12-13,16-18H2,1H3,(H,20,21)/b11-10-,15-14-