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
CCCc1cc2c(cc1CC)CCN(C)C2CCC1CNc2cc(N)c(OC)cc21
assistant