Why would the compound below not react with a dienophile in a Diels-Alder reaction? 
Definitions:
Lower Visual Field
The portion of the visual field that is seen by the lower part of the retina, related to superior spatial resolution and mobility navigation.
Corpus Callosum
The large band of neural fibers connecting the two hemispheres of the brain, facilitating interhemispheric communication.
Visual Fields
The total area or space that can be seen by the eyes when looking straight ahead, including peripheral vision.
Parietal
Pertaining to the parietal lobe of the brain, which processes sensory information such as touch, temperature, and pain.
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