What reagents would be needed to synthesize the following substance via the Diels-Alder reaction? Give stereochemical details,as relevant. 
Definitions:
Standard
An established measure or model that is used for comparison in evaluating the quality, performance, or compliance of various entities.
Externality
Action by either a producer or a consumer which affects other producers or consumers, but is not accounted for in the market price.
Weed Control
The process or methods used to prevent or reduce unwanted plant (weed) growth that competes with desired plants in agricultural or horticultural operations.
Private Decision
Choices made by individuals or businesses that primarily affect themselves and are guided by personal preferences or interests.
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