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 pde2 inhibitor.
user
COc1c(F)cc(C(=O)N2CC(c3cc(C)nc4ncnn34)CC(F)(F)C2)cc1Cl
assistant