You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-[2-[[2-[(2,4-diamino-4-oxobutanoyl)amino]acetyl]amino]propanoylamino]-3-methylpentanoic acid using the IUPAC nomenclature.
user
C15H27N5O6
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