You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: The molecule is a pde4 inhibitor.
user
CCOc1cc2c(cc1OC)=C(c1ccc(OC)nc1OC)NC1CCC(O)CC=21.O=C(O)CC(O)(CC(=O)O)C(=O)O
assistant