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system
Provide the molecular formula for the IUPAC named substance (2S,3S)-2-[[(2S)-2-(1,2-dihydroimidazo[1,2-a]benzimidazole-3-carbonylamino)-4-methylsulfanylbutanoyl]amino]-3-methylpentanoic acid .
user
C21H29N5O4S
assistant