You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a phosphodiesterase inhibitor.
user
CC(O)c1ccc(F)c(-c2cnc(N3CC4(COC4)c4ccc(C(=O)N(C)CC(N)=O)cc43)nc2)c1
assistant