What is the common name of the following compound? 
Definitions:
Allergic Reaction
An immune response to a substance (allergen) that results in symptoms such as itching, swelling, and difficulty breathing.
IgE
Immunoglobulin E, a class of antibodies produced by the immune system in response to allergens.
Naturally Acquired Active
refers to immunity developed through exposure to the natural occurrence of a pathogen, leading to the formation of memory cells and antibodies without vaccination.
Exposure
Contact with something (like chemicals, radiation) or the state of being exposed, particularly in a context where it may cause harm or disease.
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