You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: The molecule is a proteasome inhibitor and is cancer treatment.
user
Cc1ccccc1C(=O)C(Cl)=C(C=O)Nc1ccc(NC(=O)c2ccncc2)cc1
assistant