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 that fulfills the requirement: The molecule is both a cancer treatment and a proteasome inhibitor.
user
CC(C)CC(NC(=O)C(CCCN=C(N)N[N+](=O)[O-])NC(=O)C(C)c1ccc(Cl)cc1)B1OC2CC3CC(C3(C)C)C2(C)O1
assistant