InChI=1S/C20H34O/c1-13-6-7-14-12-18(4)9-8-15-16(18)20(13,17(14,2)3)11-10-19(15,5)21/h13-16,21H,6-12H2,1-5H3/t13-,14+,15+,16-,18+,19+,20-/m1/s1