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 and belongs to the anti allergic class of molecules.
user
CCCOc1ccccc1-c1nc2c(c(=O)[nH]1)=NC(=S)N=2
assistant