Chapter 14, Problem 53P

$\text{Friedel–Crafts alkylation}$ of benzene with $\text{1-chlorobutane}$ gave a product for which the $\text{H}$ and $\text{C}\text{ NMR}$ spectra are shown in Figure $14.56$. The number of attached hydrogens from DEPT analysis are indicated on the $\text{C}\text{ NMR}$ spectrum. Assign a structure to the product.