Chapter 26, Problem 26.24P

What steps are needed to convert $\text{but-1-ene}$ $\left({\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}{\text{CH = CH}}_{\text{2}}\right)$ to octane $\left[{\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_{\text{6}}{\text{CH}}_{\text{3}}\right]$ using a coupling reaction with an organocuprate reagent? All carbon atoms in octane must come from $\text{but-1-ene}$.