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 a obesity treatment member of the cb1 antagonist class. Please represent the molecule in SMILES.
user
O=C(c1ccc(F)cc1)N1CCN(C(c2ccc(Cl)cc2)c2ccc(Cl)cc2)CC1
assistant