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 pde4 inhibitor.
user
NC(=O)c1ccnc(-c2cnc(N3CC4(CC4)c4ccc(C(=O)N5CCOCC5)cc43)nc2)c1
assistant