Write the IUPAC names of the following compounds :
`CH_2 = CH - underset(Br) underset(|) C=CH-CH =CH_2`

Explanation

To write the IUPAC name of the given compound `CH₂=CH-Br|C=CH-CH=CH₂`, we will follow these steps:

### Step 1: Identify the Longest Carbon Chain
First, we need to identify the longest continuous carbon chain that contains the double bonds. In this case, the longest chain consists of 6 carbon atoms.

### Step 2: Number the Carbon Atoms
Next, we will number the carbon atoms in the chain. We will start numbering from the end that gives the double bonds the lowest possible numbers.

...