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 pain treatment.
user
C=CCN(CC(Cc1ccccc1)N(C)C)c1nc(Cc2ccccc2)cc(=O)[nH]1
assistant