You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-(3-aminopiperidin-1-yl)-3-methyl-7-(3-methylbut-2-enyl)-1-(2-phenylimino-3-pyrimidin-2-ylpropyl)purine-2,6-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H35N9O2
assistant