You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: It belongs to the pgd2 receptor antagonist class of molecules.
user
CCC(=O)N(c1ccc(Cl)cc1)C1CC(C)N(C(=O)c2ccc(F)cc2)c2ccc(OCC(N)=O)cc21
assistant