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
CCn1c(CCC2CCCN2C(=O)C2CCC(=O)N2CC(=O)O)cc2ccc(C(=N)N)cc21
assistant