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 phosphodiesterase inhibitor.
user
CC(CO)n1c(=O)n(C)c(=O)c2c(Nc3ccccc3)n(Cc3ccc(-n4ccnc4)cc3)cc21
assistant