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 both a phosphodiesterase inhibitor and a pde4 inhibitor. Please write the SMILES representation of it.
user
O=C(O)c1ccc(OC(F)F)cc1OCC1CC1
assistant