You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(4,6-difluoro-1,3-benzothiazol-2-yl)piperazin-1-yl]-(2,3-dihydro-1,4-benzodioxin-3-yl)methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H17F2N3O3S
assistant