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 and belongs to the rheumatoid arthritis treatment, chemokine receptor modulator, and inflammatory disease treatment classes of molecules.
user
CCOC(=O)C1CC2(CCC1NC(C)c1ccccc1)OCCO2
assistant