You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a thrombin inhibitor. Please write the SMILES representation of it.
user
O=C(N1CCOCC1)N1CC(c2ccc(OC(F)(F)F)cc2)CC(c2nc(-c3ccncc3)co2)C1
assistant