You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[3,5-dimethyl-4-[6-[2-(2-methyl-1,3-benzothiazol-5-yl)acetyl]-1H-benzimidazol-2-yl]phenyl] trifluoromethanesulfonate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H20F3N3O4S2
assistant