You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a anti obesity and belongs to the npy y5 antagonist class of molecules.
user
C=CCC(CCCN)C(=O)NC1C=C(C(F)(F)F)C=CC1
assistant