InChI=1S/C18H34O3/c1-2-3-4-8-11-14-17(19)15-12-9-6-5-7-10-13-16-18(20)21/h11,14,17,19H,2-10,12-13,15-16H2,1H3,(H,20,21)/b14-11+/t17-/m0/s1