You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R)-3-amino-2-(2-aminoacetyl)oxy-4-ethoxy-2-ethyl-3-methyl-4-oxobutanoic acid;diphosphazene;ethyl (2S)-2-amino-3-phenylpropanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H38N4O8P2
assistant