You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a pain treatment. Please represent the molecule in SMILES.
user
CCOC(=O)Cc1ccc(N2C(=O)c3c(c(OC(F)F)c4ccccc4c3OCC)C2=O)c(F)c1
assistant