InChI=1S/C20H34O/c1-16(8-6-9-17(2)13-15-21)11-12-19-18(3)10-7-14-20(19,4)5/h8,13,19,21H,3,6-7,9-12,14-15H2,1-2,4-5H3/b16-8+,17-13+/t19-/m1/s1