You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-[[4-amino-2-[[3-carboxy-2-(pyrrolidine-2-carbonylamino)propanoyl]amino]-4-oxobutanoyl]amino]-3-methylbutanoic acid .
user
C18H29N5O8
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