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
COc1c(OC(F)F)ccc(-c2cccc3c2CCC3=O)c1OCc1ccc(S(C)(=O)=O)cc1
assistant