According to the structure as referring to IMAGE \(02\), first of all, long chain is selected, i.e., here it is of \(7\) carbon.
So, it will be named as heptane and then third and fourth carbon contains one ethyl and \(2\) methyl group.
So it will be named as \(3\) - Ethyl -\(4, 4\)-dimethylheptane.