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 protease inhibitor and is anti viral.
user
O=C1C(=O)N2CCN(C(=O)c3ccccc3)CC2c2[nH]c3c(C(=O)Oc4c(F)c(F)c(F)c(F)c4F)ccnc3c21
assistant