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: It belongs to the pain treatment class of molecules. Please represent the molecule in SMILES.
user
CC1(C)OCC(c2cc(NC(=O)C(C)(C)C)nc(-c3ccc(Oc4ccc(F)cc4)cc3)c2)O1
assistant