You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a asthma treatment and belongs to the crth2 antagonist class of molecules. Use the above information to create a molecule.
user
CS(=O)(=O)c1ccc(C(F)(F)c2cc(CC(=O)O)cc3ccc(F)cc23)cc1
assistant