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
Cc1c(C(=O)NC2CCCC(C)C(=O)Nc3cc(NC(=O)OC(C)C)ccc3-c3ccnc2c3)nnn1-c1cccc(Cl)c1F
assistant