You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a thrombin inhibitor and belongs to the anti coagulant class of molecules.
user
O=C(O)C1CSCC2CN(C(=O)CCc3ccccc3)CC(=O)N21
assistant