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
CCC(NC(=O)C1CC(C)(NC(=O)Nc2cc(F)ccc2F)c2ncc(NCc3cccc(C(F)(F)F)c3)c(=O)n21)B1OC2CC3CC(C3(C)C)C2(C)O1
assistant