The IUPAC name of the following compound
3-ethyl-4,4-dimethyl octane
4,4-dimethyl-3-ethyl octane
5,5-dimethyl-6-ethyl octane
6-ethyl-5,5-dimethyl-octane
Step(1): Choose the longest chain
Step(2): Choose the side chain which has the least number from the end
Step(3): Alphabetically write the side chain (do not consider di,tri)
So, the name of the compound is 3-ethyl-4,4-dimethyl octane.
Therefore, option (1) is correct.