You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a factor xia inhibitor.
user
COC(=O)Nc1ccc2c(c1)NC(=O)CC(O)CCCC(NC(=O)C=Cc1cc(Cl)ccc1-n1cnnn1)c1ncc-2[nH]1
assistant