You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a sodium channel inhibitor and is pain treatment.
user
CS(=O)(=O)NC(=O)c1cc(C2CC2)c(CN2CCC(S(=O)c3cc(Cl)cc(Cl)c3)CC2)cc1F
assistant