You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? It belongs to the pain treatment class of molecules.
user
CNCCCCC(=O)NCCN1Cc2ccccc2C2(CCN(C3CCC(C(C)C)CC3)CC2)C1=O
assistant