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 pde inhibitor.
user
COc1ccc(-c2ccc(=O)n(CCCCOc3ccc(C4=NNC(=O)C4(C)C)c(F)c3F)n2)c2cc(C(F)(F)F)oc12
assistant