You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 4-[(8R)-2-cyclopropyl-8-methyl-6,8-dihydro-5H-[1,2,4]triazolo[1,5-a]pyrazine-7-carbonyl]benzenesulfonamide into its molecular formula.
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C16H19N5O3S
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