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 anti coagulant.
user
O=C(Nc1cccc2c1C(=O)N(CC(=O)N1CCN(c3cccc4[nH]ccc34)CC1)C2=O)c1ccc(Cl)s1
assistant