You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[(3R)-1,1-dioxothiolan-3-yl]-N-[2-[[(3S)-1,1-dioxothiolan-3-yl]-formylamino]ethyl]formamide is given. What is its corresponding molecular formula?
user
C12H20N2O6S2
assistant