You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a phosphodiesterase inhibitor. Please represent the molecule in SMILES.
user
Cc1c(C(=O)C(C)Br)ccc2c1C(C)(C)C(=O)N2
assistant