You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a phosphodiesterase inhibitor.
user
CCc1c2nc(-c3cc(S(=O)(=O)N4CCN(O)CC4)cnc3OCCOC)[nH]c(=O)c2nn1Cc1ccccn1
assistant