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: It belongs to the pain treatment class of molecules.
user
O=C(c1cccc(C(F)(F)F)n1)N1CCCN2CC(Oc3cnc(C4CC4)cn3)CC2C1
assistant