Answer:
3-methylhexane
Step-by-step explanation:
For naming alkane molecules follow the following steps
1) Find the longest continuous carbon chain and count the number of carbons
In this structure, it is from the bottom, then up, then to the right. Making a right angle. There is 6 carbons in this chain which means it's a hexane
2) Number the longest carbon chain so the constituents (parts not part of the carbon chain) are connected to the carbon with smallest number possible.
This gives the extra CH3 group connected to carbon 3
3) Put it all together
Methyl connected to carbon 3 + hexane
3-methylhexane