You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-amino-2-[[2-[[2-[(2-amino-3-methylbutanoyl)amino]-4-methylpentanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-5-oxopentanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H40N6O6
assistant