Write down structure of the following compounds:
4-chloro-2-ethyl-1-butene

Explanation

To write down the structure of the compound 4-chloro-2-ethyl-1-butene, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Base Chain**:
- The name "butene" indicates that the base chain has 4 carbon atoms (but-). The "1-" indicates that the double bond is located between the first and second carbon atoms.

2. **Draw the Carbon Backbone**:
...