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: It belongs to the pain treatment class of molecules. Please write the SMILES representation of it.
user
CNC(=O)C(NC(=O)c1cc(OC(C)C)cc(OC(C)C)c1)c1ccccc1
assistant