You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a cardiovascular treatment and belongs to the pgd2 receptor antagonist class of molecules.
user
CCOC(=O)Cc1ccc(OC)c(-c2ccc(-c3ccc4ncccc4c3)cc2C(CC)NC(=O)NCc2ccccc2)c1
assistant