You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (2E,5S)-2-[(5-bromo-2-hydroxy-3-iodophenyl)methylidene]-5-[3-ethoxy-4-(2-methoxy-2-oxoethoxy)phenyl]-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
C28H26BrIN2O8S
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