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
CN(C)C1CCN(C(=O)c2cnn3ccc(N4CCCC4c4cc(F)ccc4F)cc23)C1
assistant