The structural formula of an ester is shown in the image. Write the structural formula of the acid and the alcohol from which it might be prepared. Name the process of formation of ester.

(N/A) The given ester is pentyl ethanoate. It is prepared from ethanoic acid $(CH_3COOH)$ and pentan$-1-$ol $(CH_3CH_2CH_2CH_2CH_2OH)$.
The structural formula of ethanoic acid is:
$H-C(H)(H)-C(=O)-O-H$
The structural formula of pentan$-1-$ol is:
$H-C(H)(H)-C(H)(H)-C(H)(H)-C(H)(H)-C(H)(H)-O-H$
The process of formation of an ester from a carboxylic acid and an alcohol in the presence of an acid catalyst is called esterification.