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system
Name the molecular formula for the molecule established as 2-amino-4-methylsulfanyl-5-oxo-5-[2-[2-[[(S)-[[(2S)-5-oxopyrrolidin-2-yl]amino]methylsulfinyl]amino]phenyl]phenyl]pentanoic acid using the IUPAC nomenclature.
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C23H28N4O5S2
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