You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a proteasome inhibitor that impacts cancer treatment. Please write the SMILES representation of it.
user
O=C(NC(CO)C(=O)NC(Cc1ccccc1)C(=O)C1(CO)CO1)c1cccc(-c2ccccc2)c1
assistant