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 based on this description: The molecule is a phosphodiesterase inhibitor.
user
CCCCOc1ncc(I)cc1-c1nc2c(CC)n(C3CN(C(=O)O)C3)nc2c(=O)[nH]1
assistant