You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is a pde4 inhibitor.
user
CCc1nc2c(cnn2CC)c(NC2CCCCC2)c1CNC(=O)c1cccc(C(=O)NCc2ccc(F)c(-c3cccc(CN4CCN(c5ccncc5)CC4)c3)c2)c1
assistant