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
COCCNC(=O)c1[nH]nc2c1C(C=Cc1ccc(-c3cccc(F)c3)cn1)C1=C(CC3(CCCC3)CC1=O)N2
assistant