Write the IUPAC name of the compound `overset(4)(CH_3) - overset(3)(C) -= overset(2)(C) - overset(1)(CH_3)`.

Explanation

To determine the IUPAC name of the compound given as `overset(4)(CH_3) - overset(3)(C) ≡ overset(2)(C) - overset(1)(CH_3)`, we can follow these steps:

### Step 1: Identify the Longest Carbon Chain
The structure indicates there are four carbon atoms in the longest continuous chain. The carbon atoms are connected as follows:
- Carbon 1 (C1) has a methyl group (CH₃) attached.
- Carbon 2 (C2) is part of a triple bond.
- Carbon 3 (C3) is also part of the triple bond.
- Carbon 4 (C4) has a methyl group (CH₃) attached.
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