You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-(1,4-diazepan-1-yl)-4-methylsulfanyl-1-oxobutan-2-yl]benzenesulfonamide;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H26ClN3O3S2
assistant