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 propan-2-yl (2S)-6-amino-2-[[(2S)-2-[[(2S)-2-(methylamino)propanoyl]amino]-3-phenylpropanoyl]amino]hexanoate ?
user
C22H36N4O4
assistant