You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3,4-dihydro-1H-isoquinolin-2-yl)-N-[2-(4-methoxyphenyl)ethyl]-9-phenylpurin-6-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H28N6O
assistant