You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a phosphodiesterase inhibitor and is anti thrombotic.
user
CCC1C(=O)Nc2nc3ccc(OCCCC(=O)N(CCO)CC4CCCCC4)c(Cl)c3c(=O)n21
assistant