You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[2-[2-[(1-benzylpiperidin-4-yl)amino]-6-(pyridin-3-ylmethylamino)purin-9-yl]ethyl]pyrrolidin-2-one .
user
C29H35N9O
assistant