You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a protease inhibitor. Use the above information to create a molecule.
user
CC(C)CC(NC(=O)O)C(=O)NC(CC(C)C)C(=O)NN(CC(C)C)C(=O)C=O
assistant