You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(6-nitro-1,3-benzothiazol-2-yl)-1-(thiophene-2-carbonyl)azetidine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H12N4O4S2
assistant