You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-nitro-1,1-dioxo-2-[(E)-4-sulfanylbut-2-enyl]-1,2-benzothiazol-3-one by IUPAC nomenclature, provide its molecular formula.
user
C11H10N2O5S2
assistant