You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a phosphodiesterase inhibitor, dppiv inhibitor, muscarinic agonist, pde4 inhibitor, schizophrenia treatment and belongs to the serotonin antagonist class of molecules. Please represent the molecule in SMILES.
user