You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a factor xia inhibitor and belongs to the anti coagulant class of molecules.
user
Cl.O=C(O)Cc1cc(-c2nc(C3CCc4cc(-c5cc(Cl)ccc5-n5cnnn5)cc(=O)n43)[nH]c2Cl)cs1
assistant