You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[6-amino-2-[[2-amino-3-(1H-imidazol-5-yl)propanoyl]amino]hexanoyl]amino]-5-[(1-carboxy-2-phenylethyl)amino]-5-oxopentanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H37N7O7
assistant