You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a pgd2 receptor antagonist.
user
COc1ccc(C(=O)N2c3ccccc3C(N(C(C)=O)c3cccc(C(N)=O)c3)CC2C)cc1
assistant