You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[3-[2-[2-ethyl-6-(4-methylpiperazin-1-yl)pyrimidin-4-yl]-3-methyl-3,4-dihydro-1H-isoquinolin-7-yl]pyrazol-1-yl]propanenitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H34N8
assistant