You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a hcv protease inhibitor and belongs to the hepatitis c treatment class of molecules. Use the above information to create a molecule.
user
C=CCCC(NC(=O)C(C)C1C(CC)C1(C)C)C(=O)C(C)=O
assistant