You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (2E,5S)-2-[[3,5-dibromo-4-[(2,4-dichlorophenyl)methoxy]phenyl]methylidene]-7-methyl-5-(4-methylphenyl)-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H24Br2Cl2N2O4S
assistant