You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[2-(4-bromophenyl)sulfanylethylamino]-2-oxoethyl] (2S)-5-oxopyrrolidine-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H17BrN2O4S
assistant