You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a asthma treatment.
user
CCC[N+]1(C)C2C=CC1CC(OC(=O)C(O)(c1ccc(F)c(F)c1)c1ccc(F)c(F)c1)C2
assistant