Write down the bond line structure of the following:
Ethyl butanoate

Explanation

To draw the bond line structure of ethyl butanoate, follow these steps:

### Step-by-Step Solution:

1. **Identify the Components**:
- Ethyl butanoate is an ester formed from ethanol (ethyl group) and butanoic acid (butanoate).
- Ethyl corresponds to the group -CH2CH3 (C2H5).
- Butanoate corresponds to the butanoic acid part, which has a four-carbon chain (C4H8O2).
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