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 and belongs to the allergic disease treatment class of molecules.
user
CC(C)Oc1ccc(S(=O)(=O)N2CCC(c3cn(CC(=O)NOCc4ccccc4)c4nc(Br)ccc34)CC2)cc1
assistant