Complex sentence: The opera was a commission from Cardinal Mazarin to celebrate the wedding of Louis XIV and Maria Theresa of Spain, however the grand preparations for the production resulted in delays and the opera was only presented two years later.
Split into simpler sentences: The opera was a commission from Cardinal Mazarin to celebrate the wedding of Louis XIV and Maria Theresa of Spain. However, the grand preparations for the production resulted in delays and the opera was presented two years later.