You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a pde4 inhibitor.
user
O=c1c2cc(F)cnc2n(C2CCSCC2)c(=O)n1C1CCC(NCc2ccccc2OCCO)CC1
assistant