You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is both a cancer treatment and a ret kinase inhibitor.
user
Cn1cc(-c2cn3ncc(C#N)c3c(-c3ccc(N4CCN(C(=O)C(NC(=O)O)c5cccc(Cl)c5)CC4)nc3)n2)cn1
assistant