You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a phosphodiesterase inhibitor.
user
O=C(Nc1ccccc1-c1ccccc1)OC1CCN(CNCC(O)c2ccc(O)c3[nH]c(=O)sc23)CC1
assistant