Identify the structure of paracetamol from the following.

Paracetamol is also known as acetaminophen. Its IUPAC name is N-(4-hydroxyphenyl)acetamide.

The structure consists of a benzene ring substituted with a hydroxyl group ($-OH$) and an acetamide group ($-NHCOCH_3$) at the para position relative to each other.

Analyzing the given options:
The first structure is a urea derivative.
The second structure is a carbamic acid derivative.
The third structure has an extra methyl group on the benzene ring.
The fourth structure has exactly a hydroxyl group and an acetamide group para to each other on a benzene ring, which corresponds to paracetamol.

Answer: