You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a pain treatment. Please write the SMILES representation of it.
user
O=C(O)c1cc(NC(=O)C2(c3ccc(F)cc3F)CC2)cc(F)c1-c1ccc(C(F)F)nc1
assistant