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system
Provide the molecular formula for the IUPAC named substance 2-methyl-5-[(8S)-8-methyl-2-phenyl-6,8-dihydro-5H-[1,2,4]triazolo[1,5-a]pyrazine-7-carbonyl]-4H-1,2,4-triazol-3-one .
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C16H17N7O2
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