You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a pgd2 receptor antagonist.
user
CCCN(CCC)c1ccc(C(=O)N2c3ccccc3C(N(C(=O)CC)c3ccccc3)CC2C)cc1
assistant