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 parp inhibitor.
user
CN1CCCN(c2ccc(-c3cn4cccc(C(N)=O)c4n3)cc2)CC1
assistant