You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a hiv protease inhibitor.
user
COCc1csc(-c2sc3c(c2C(=O)O)CC(C)(C)CC3)n1
assistant