You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[2-amino-3-(1H-indol-3-yl)propanoyl]amino]-5-[[1-(1-carboxyethylamino)-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]amino]-5-oxopentanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H31N7O7
assistant