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 crth2 antagonist.
user
C=C(C(CC(=O)O)=C(C)N(N)Cc1ccccc1S(=O)(=O)N1CCCCC1)c1ccccc1
assistant