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system
What is the molecular formula of the molecule identified by (8S)-3-(1-methylimidazol-2-yl)-1'-(pyridin-3-ylmethyl)spiro[6,7-dihydropyrrolo[2,1-c][1,2,4]triazine-8,3'-pyrrolidine]-4-one ?
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C19H21N7O
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