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
COc1ccc(-c2ccc3c(C4CCN(S(=O)(=O)c5ccc(OC(C)C)cc5)C4)cn(CC=O)c3c2)cc1
assistant