You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,3,5,6-tetrafluoro-N-(1,2,3,4-tetrahydroisoquinolin-1-ylmethyl)benzenesulfonamide;hydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H15ClF4N2O2S
assistant