You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(1,1-dioxothiolan-3-yl)-ethylamino]-2-oxoethyl] (2S)-2-(1,3-dioxoisoindol-2-yl)-3-phenylpropanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H26N2O7S
assistant