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 anti viral agent and a hcv inhibitor, belonging to the anti viral class of molecules.
user
Nc1nc2ccc(-c3ccc4nc(NCS)sc4c3)cc2s1
assistant