You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a crth2 antagonist and is asthma treatment.
user
O=C(O)COc1ccc(Cl)cc1-c1ccc2c(c1)S(=O)(=O)C=C2
assistant