You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a pde1 inhibitor.
user
Cc1oc2ncnc(NC3(C)CC3)c2c1C(=O)N1CCc2c(ncnc2NC(C)C)C1
assistant