You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-amino-N-[2-oxo-2-[[2-oxo-2-[[2-oxo-2-(2-oxopropylamino)ethyl]amino]ethyl]amino]ethyl]acetamide .
user
C11H19N5O5
assistant