You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2Z,5R)-2-[[2-bromo-4-[(2,4-dichlorophenyl)methoxy]-5-methoxyphenyl]methylidene]-5-(5-chloro-2-methoxyphenyl)-7-methyl-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
C31H24BrCl3N2O6S
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