You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[(7S)-5-(4-methylphenyl)sulfonyl-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-7-yl]-1-(oxazinan-2-yl)ethanone by IUPAC nomenclature, provide its molecular formula.
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C19H24N4O4S
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