You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a asthma treatment member of the pgd2 receptor antagonist class. Please write the SMILES representation of it.
user
CC(C)(O)CCn1c2c(c3ccccc31)CC(N(CC(=O)O)S(=O)(=O)c1ccc(F)cc1)CC2
assistant