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system
Name the molecular formula for the molecule established as ethyl (2E,5R)-2-[(2-hydroxynaphthalen-1-yl)methylidene]-7-methyl-5-(4-methyl-3-nitrophenyl)-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate using the IUPAC nomenclature.
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C28H23N3O6S
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