You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): It belongs to the pain treatment class of molecules.
user
CCCCCN1C(=O)C2(CCC(=O)c3cc4c(cc32)OCO4)C2=C1CCC=C2
assistant