You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3S)-4-[(2S)-2-carbamoylpyrrolidin-1-yl]-4-oxo-3-(4-phenylbutanoylamino)butan-2-yl] dihydrogen phosphate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H28N3O7P
assistant