You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a protease inhibitor.
user
COCCn1c(C(=O)O)c(C2(C(N)=O)CCCCC2C(=O)NC(C#N)CC(C)C)c2ccccc21
assistant