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. Please represent the molecule in SMILES.
user
O=C(Cn1c(=O)c2ccccc2n(CCN2CCOCC2)c1=O)OC(Cc1c(Cl)c[n+]([O-])cc1Cl)c1ccc(OC(F)F)c(OCC2CC2)c1
assistant