You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a thrombin inhibitor.
user
COc1ccccc1C(=O)n1nc(C2CN(C(=O)C(C)(C)C)C2)nc1NCc1ccc(Cl)s1
assistant