You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a phosphodiesterase inhibitor that impacts cardiovascular treatment. Please represent the molecule in SMILES.
user
CCOC(=O)C1CCN(c2nc(CCl)nc3oc4c(c23)CCCC4)CC1
assistant