Draw structural formulas for the $,-$unsaturated aldehyde or ketone and the lithium diorganocuprate $($Gilman reagent$)$ that could be used in a synthesis of the compound shown below.

You do not have to consider stereochemistry.

In cases where there is more than one answer, just give one.

If a structure has a copper$-$lithium bond, draw the lithium ion in a separate sketcher.

Draw one structure per sketcher. Add additional sketchers using the drop$-$down menu in the bottom right corner.

Separate multiple reactants using the $+$ sign from the drop$-$down menu.