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 pain treatment. Please represent the molecule in SMILES.
user
O=C(c1c[nH]c(=O)c(-c2cccc(Br)c2)n1)N1CCC(N(C2CC2)S(=O)(=O)c2cccc(C(F)(F)F)c2)CC1
assistant