You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is a pde4 inhibitor.
user
Fc1ccccc1Cc1cnc(C(Cc2ccncc2)c2ccc(OC(F)F)c(OC(F)F)c2)s1
assistant