You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a cb1 antagonist.
user
CCCCC(=O)NC1CCN(c2ncnc3c2nc(-c2ccncc2Cl)n3-c2ccc(Cl)cc2)CC1
assistant