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 hcv protease inhibitor that impacts hepatitis c treatment.
user
CNS(=O)OCC(NC(C)C)C(C)(C)C
assistant