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 that fulfills the requirement: The molecule is a crth2 antagonist that impacts allergic disease treatment.
user
O=C(O)CCCCc1nc2cc(-c3cc(COCc4ccc(F)cc4)on3)ccc2c(=O)n1-c1ccc(F)cc1
assistant