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)-3-[3-[5-[3-(diaminomethylideneamino)propyl]-4-hydroxy-2-oxo-1H-imidazol-3-yl]propanoylamino]-2-(phenylmethoxycarbonylamino)propanoic acid ?
user
C21H29N7O7
assistant