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: It belongs to both the ccr5 antagonist and hiv treatment classes of molecules.
user
CC(=O)C1=C(C(=O)NC2CC2)CCC1
assistant