Answer
2,3-dimethylheptane.
Work Step by Step
1. The longest carbon chain consists of 7 carbon atoms if we start counting from the right-hand side. Hence the base name for this alkane is heptane.
2. To give the substituent groups the smallest number, counting is done from the left-hand side. The second and the third carbon atom from the left has a methyl group present. Therefore it is named as 2,3-dimethylheptane.
