Write the structural formulae of the following compounds :
5-methylhept-3-ene.

Explanation

To write the structural formula of 5-methylhept-3-ene, we will follow these steps:

### Step 1: Identify the Parent Chain
The name "hept" indicates that the parent chain contains 7 carbon atoms. Therefore, we will start by drawing a straight chain of 7 carbon atoms.

**Structural Representation:**
```
C1 - C2 - C3 - C4 - C5 - C6 - C7
...