You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a pain treatment.
user
CCC1Cc2c(nn(C)c2-c2cc(F)c(F)c(F)c2)C(CC)N1C(=O)c1cn(C)nc1C1CC1
assistant