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system
Name the molecular formula for the molecule established as 4-[(2-amino-3-methylpentanoyl)amino]-5-[[1-[(1-carboxy-3-methylsulfanylpropyl)amino]-1-oxopropan-2-yl]amino]-5-oxopentanoic acid using the IUPAC nomenclature.
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C19H34N4O7S
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