You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-tert-butyl-N-[2-methyl-3-[1-methyl-6-oxo-5-[[4-(piperazine-1-carbonyl)-3-(prop-2-enoylamino)phenyl]methyl]pyridin-3-yl]phenyl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C39H43N5O4
assistant