The image displays the structural formula of 2,3-dimethylpentane, a branched alkane. - The structure consists of a five-carbon chain (pentane) with two methyl groups (-CH₃) attached. - The main chain is linear and comprises three carbon atoms in a row. - The first methyl group branches off the second carbon of the main chain, and the second methyl group attaches to the third carbon. - The angles in the structure represent carbon atoms, and the lines represent bonds between them. This molecular structure is typical for branched alkanes and is used to study the physical and chemical properties of such compounds in organic chemistry.

In iupac nomenclature,

First we select longest carbon chain which must include functional group. 

Then, we number the carbon from which side where substituents get minimum number.