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 (2S)-2-[[(2S)-5-amino-5-oxo-2-[[2-[[2-(phenylmethoxycarbonylamino)acetyl]amino]acetyl]amino]pentanoyl]-nitroamino]-5-(diaminomethylideneamino)pentanoic acid .
user
C23H33N9O10
assistant