The chemical name of 'Aspirin' is

Aspirin is a widely used drug.

It is prepared by the reaction of Salicylic acid with Acetic anhydride in the presence of a strong acid like Sulphuric acid(H₂SO₄). 

Aspirin is used to treat fever, common cold, mild to moderate pain such as headaches, muscle aches, etc.

It is also used to prevent heart attack or stroke.

Hence, the correct answer is B .i.e. Acetylsalicylic acid.