You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-3-(1H-imidazol-5-yl)propanoyl]amino]-3-hydroxybutanoyl]amino]-5-(diaminomethylideneamino)pentanoic acid ?
user
C16H28N8O5
assistant