You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a pde4 inhibitor. Please write the SMILES representation of it.
user
COc1ccc(C2=NN(C3CCCCCC3)C(=O)C3CC=CCC23)cc1OC(F)F
assistant