You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a proteasome inhibitor and belongs to the cancer treatment class of molecules.
user
CC(CNC(=O)c1cccc(-c2ccccc2)c1)NC(O)C(CC(=O)NC(C)(C)C)NC(=O)CCc1ccccc1
assistant