You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a factor xia inhibitor.
user
O=C(C=Cc1cc(Cl)ccc1N1C=NNN1)NC(Cc1ccccc1)C(=O)Nc1ccc(CP(=O)(O)O)cc1
assistant