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: The molecule is a ion channel inhibitor and is pain treatment.
user
COc1cc(C(=O)N2CCC3(c4cc(F)ccc4F)OCOC3C2)ccc1OCC1CC(F)(F)C1
assistant