You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[(2S)-5-amino-2-[[(2S,3S)-2-amino-3-methylpentanoyl]amino]-5-oxopentanoyl]amino]-5-(diaminomethylideneamino)pentanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H33N7O5
assistant