Answer
The compound is an ester (general formula : $RCOOR$).
The name of the compound is $methyl\:3-methylbutanoate$
Work Step by Step
Esters have the general formula of $RCOOR$, where $R$ groups are alkyl groups. So, the given compound is an ester.
Naming:
The base name of the ester is from the longest chain containing the $-COO-$ functional group, ending in $-oate$, and the other $R$ group is named as ending in $-yl$. Here, this longest chain has 4 carbons. This chain has a -methyl group at position 3 ( counting from the carbon of the $-COO-$ group). The other $-R$ group is methyl. Hence, name of the compound is $methyl\:3-methylbutanoate$.
