Step 1 - Longest carbon chain has 6carbons. The chain is therefore hexane

Step 2 - Number the carbons so that the side chains(methyl and ethyl groups) are on the lowest numbered carbons.

Step 3 - Identify the side chains as two methyls and one ethyl.

Step 4 - Writing the name with ethyl (alphabetical order) and methyl as the prefix we get

4-ethyl-2,2-dimethylhexane