You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-(5-butyl-6,8-dioxo-7-propyl-1,3,5,7-tetrahydropyrimido[4,5-e][1,3,4]thiadiazine-6,8-diium-2-yl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C14H25N5O3S+2
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