You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[4-carboxy-2-[[3-hydroxy-2-(pyrrolidine-2-carbonylamino)propanoyl]amino]butanoyl]amino]-4-methylpentanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C19H32N4O8
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