Answer
The IUPAC name of the compound is $isobutyl \hspace1mm benzoate$. The common name of the compound is $isobutyl \hspace1mm benzoate$.
Work Step by Step
The given compound is an ester. In its name, the first word is derived from the alkyl group of the alcohol, and the second word is derived from the $carboxylate$ group of the carboxylic acid. The compound has isobutyl alcohol as the alcohol group and benzoic acid as the carboxylic group. The IUPAC name of the alkyl group is isobutyl, and the IUPAC name of the carboxylate group is benzoate. The common name of the alkyl group is isobutyl, and the common name of the carboxylate group is benzoate. So, the IUPAC name of the compound is $isobutyl \hspace1mm benzoate$. The common name of the compound is $isobutyl \hspace1mm benzoate$.