The following product is formed by an intramolecular Diels-Alder reaction. Provide the structure of the starting compound. 
Definitions:
Single-parent Households
Households headed by a single individual who is responsible for raising children without the partnership of another parent in the home.
Horticultural Societies
Societies that rely on the cultivation of plants in gardens to provide food, utilizing simple tools and methods rather than large-scale agriculture.
Residence Pattern
A social system that determines where newly married couples reside, such as with the wife's or husband's family, or independently.
Political Organization
The way in which a society structures its political and authority relationships, governing the distribution of power and resources.
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