You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a phosphodiesterase inhibitor. Please write the SMILES representation of it.
user
CCc1nn(CC(C)COC(=O)c2ccc(Cl)c(F)c2)c2c1C(=O)NCCCOCCC2
assistant