You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a factor xa inhibitor.
user
O=C1NCCc2ccc(Cl)c(F)c2-c2cc(=O)n3c(c21)CCC3C(=O)O
assistant