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 and pde4 inhibitor, belonging to the anti inflammatory class of molecules, and is copd treatment.
user
CCn1ncc2c(NC3CCN(C(N)=O)C3)c(C(=O)O)cnc21
assistant