You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a ret kinase inhibitor.
user
CC(C)n1c2c(c3c(N)ncnc31)C1c3ccc(C(=O)NC4CC4)cc3N1CCC2
assistant