You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-[2-[1-(5-bromo-2,4-dihydroxyphenyl)ethylidene]hydrazinyl]-1-(3-nitrophenyl)-3-oxoprop-1-en-2-yl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H19BrN4O6
assistant