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system
Provide the molecular formula for the IUPAC named substance (2R,3R)-2-(3-chloro-4-isocyano-2-methylanilino)-3-hydroxybutanoic acid;N'-[(2R,3R)-2-(3-chloro-4-isocyano-2-methylanilino)-3-hydroxybutanoyl]-4-cyanobenzohydrazide;4-cyanobenzohydrazide .
user
C40H38Cl2N10O7
assistant