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 pde4 inhibitor. Please represent the molecule in SMILES.
user
CC(C)(O)c1cnc(C(=Cc2cccc(-c3cc(C(C)(C)C#N)cc4cccnc34)c2)c2ccccc2S(C)(=O)=O)s1
assistant