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: The molecule is a pain treatment. Please write the SMILES representation of it.
user
CCN1C(=O)N(CC)C2(CCC3(O)C4Cc5ccc(OC)cc5C3(CCN4C)C2)C1=O
assistant