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 4-[[6-amino-2-[[2-amino-3-(1H-imidazol-5-yl)propanoyl]amino]hexanoyl]amino]-5-[(1-carboxy-2-hydroxypropyl)amino]-5-oxopentanoic acid .
user
C21H35N7O8
assistant