You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1R,4S)-2,2-dioxo-2lambda6-thia-5-azabicyclo[2.2.1]heptan-5-yl]-(4-methylsulfanylphenyl)methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H15NO3S2
assistant