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 phosphodiesterase inhibitor.
user
COc1ccc(-c2oc3cc(OC(=O)c4ccccc4)cc(O)c3c(=O)c2C)cc1OC(C)CCCc1ccccc1
assistant