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 ns5a inhibitor and hcv inhibitor, belonging to the anti viral compound class of molecules, and is anti viral.
user
O=C(O)N1CCCC1c1nc2ccc(-c3ccc(Br)cn3)cc2[nH]1
assistant