You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It belongs to the pain treatment class of molecules.
user
Cc1cc(C(=O)N(C)C2CC[N+](C)(C)CC2)cc(-c2ccc(Oc3ccc(F)cc3)cc2)n1
assistant