Chapter 21, Problem 21.75P

A solution of acetone $\left[{\left({\text{CH}}_{\text{3}}\right)}_{\text{2}}\text{C}=\text{O}\right]$ in ethanol $\left({\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}\text{OH}\right)$ in the presence of a trace of acid was allowed to stand f or several days, and a new compound of molecular formula ${\text{C}}_{\text{7}}{\text{H}}_{\text{16}}{\text{O}}_{\text{2}}$ was formed. The $\text{IR}$ spectrum showed only one major peak in the functional group region around $3000{\text{cm}}^{-1}$, and the ${}^1\text{H}\text{NMR}$ spectrum is given here. What is the structure of the product?