The compound shown below undergoes a retro-Diels-Alder cycloaddition reaction to yield
carbon dioxide and another compound.Predict the structure of the other compound
formed. 
Definitions:
Hypotenuse
The longest side of a right-angled triangle, opposite the right angle.
Longest Side
The longest side refers to the side of a geometric figure that has the greatest length compared to the other sides.
Trigonometric Function
A mathematical function related to the angles of triangles, often used in science and engineering to describe oscillations, waves, and other periodic phenomena.
Right Angle
An angle of 90 degrees, typical of the corner of a square or at the intersection of perpendicular lines.
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