You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a pgd2 receptor antagonist.
user
CCOC(=O)C(C)C1=CC2(CCN(S(=O)(=O)c3ccc(Cl)cc3)CC2)c2ccccc21
assistant