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 caspase inhibitor.
user
CC(C)(C)C(NC(=O)c1ccccc1C(F)(F)F)C(=O)N1CCCC1C(=O)NC(C=O)CC(=O)O
assistant