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 factor xia inhibitor.
user
O=C(O)c1ccc(NC(=O)C2c3cccc(N4CCOCC4)c3CCN2C(=O)C2CC(c3cccc(Cl)c3F)=NO2)cc1
assistant