You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-chloro-N-(4,6-difluoro-1,3-benzothiazol-2-yl)-N-[3-(dimethylamino)propyl]-4-fluorobenzamide;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H18Cl2F3N3OS
assistant