InChI=1S/C20H34O2/c1-15-8-6-9-16(2)11-12-17-14-18(21)20(5,13-7-10-15)22-19(17,3)4/h9-10,17-18,21H,6-8,11-14H2,1-5H3/b15-10-,16-9-/t17-,18+,20-/m1/s1