You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as (2Z)-2-[(5-bromo-2,4-dihydroxyphenyl)methylidene]-5,7-dimethyl-[1,3]thiazolo[3,2-a]benzimidazol-1-one using the IUPAC nomenclature.
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C18H13BrN2O3S
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