InChI=1S/C20H34O/c1-16(2)20(21)14-12-18(4)10-6-8-17(3)9-7-11-19(5)13-15-20/h8,11-12,16,21H,6-7,9-10,13-15H2,1-5H3/b17-8-,18-12-,19-11-