You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[[2-[[2-[[2-[[2-[[2-[[2-[[(2S)-2,4-diamino-4-oxobutanoyl]amino]acetyl]amino]acetyl]amino]acetyl]amino]acetyl]amino]acetyl]amino]acetyl]amino]acetic acid by IUPAC nomenclature, provide its molecular formula.
user
C18H29N9O10
assistant