You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-amino-1,3-benzothiazol-4-yl)-6-hexyl-2-(2H-tetrazol-5-yl)benzenesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H23N7O2S2
assistant