You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a phosphodiesterase inhibitor.
user
Cc1ccnc(-c2cnc(N3CC4(COC4)c4ccc(C(=O)N(C)CC5(O)COC5)cc43)nc2)c1
assistant