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 orexin receptor antagonist class of molecules. Please represent the molecule in SMILES.
user
CNC(=O)C(c1ccccc1)N1CCn2c(C)nc(Cl)c2C1CCc1cc(F)c(C)c(F)c1
assistant