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: It belongs to the rheumatoid arthritis treatment class of molecules.
user
CC1=C(C(=O)NC(C)C(=O)NC(Cc2c[nH]c3ccccc23)C(=O)OC(C)(C)C)Cc2ccccc21
assistant