Answer
The IUPAC name of the compound is $cyclopentyl\hspace1mm cyclobutanecarboxylate$. The common name of the compound is $cyclopentyl\hspace1mm cyclobutanecarboxylate$
Work Step by Step
The compound is a carboxylate with a cyclopentyl ring attached to the cyclobutanecarboxylate group. The IUPAC name of the compound is $cyclopentyl\hspace1mm cyclobutanecarboxylate$. The common name of the compound is also $cyclopentyl\hspace1mm cyclobutanecarboxylate$