You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (4R)-4-[4-[(2R)-2-[(2Z)-2-[[3,5-dibromo-4-[(4-nitrophenyl)methoxy]phenyl]methylidene]hydrazinyl]-2-hydroxyethoxy]-3-ethoxyphenyl]-6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H31Br2N5O9
assistant