You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2Z)-2-[(4-bromophenyl)methylidene]-6-methyl-[1,3]thiazolo[3,2-b][1,2,4]triazine-3,7-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H8BrN3O2S
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