 Complete the following phrase:  After the construction of a magnificent new château at Montrouge around 1750, however, the duke gradually abandoned the Château de Champs-sur-Marne. Eventually, he tried to sell the domain, but he could not find a buyer and was forced to rent it out. Between July 1757 and January 1759, he leased the estate to Madame de Pompadour for 12,000 livres per year. The marquise spent 200,000 livres in less than eighteen months to renovate the château. In November 1757, she received the prince de Soubise there after his defeat at the 