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 based on this description: It belongs to the pgd2 receptor antagonist class of molecules.
user
COc1ccc2c(CC(=O)O)nn(C3CN(S(=O)(=O)c4ccc(O)cn4)CC3C)c2c1
assistant