You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a pde2 inhibitor and belongs to the cns disorder treatment class of molecules.
user
O=C(NC1(c2ccc(SC(F)(F)F)cc2)CC1)c1cc(=O)[nH]c(-c2ncccn2)n1
assistant