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 plasma kallikrein inhibitor.
user
O=C(NCc1c(N2CC3(COC3)C2)ccc(Cl)c1F)c1cnn(Cc2cn3cc(C4CC4)ccc3n2)c1
assistant