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 cb1 antagonist.
user
CC1(C)CC(N2C(=O)CC(O)C2=O)c2cc(-c3ccc(Cl)cc3)c(-c3ccc(Cl)cc3Cl)nc2O1
assistant