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: It belongs to the anti thrombotic class of molecules.
user
COc1cc(C(=O)NCC(=O)N2CCN(C(=O)CCC(=O)O)CC2)nc2ccccc12
assistant