Write down structure of the following compounds:
2-ethyl-3-oxobutanal

Explanation

To draw the structure of the compound 2-ethyl-3-oxobutanal, we will follow these steps:

### Step 1: Identify the base structure
The name "butanal" indicates that we have a four-carbon chain (butane) with an aldehyde functional group (-CHO) at one end.

**Hint:** Butanal means the longest carbon chain has 4 carbons, and the aldehyde group is at position 1.

### Step 2: Determine the substituents
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