You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-benzylsulfonylethyl)-N'-methyl-1,3,3a,4,5,6,7,7a-octahydroisoindole-2-carboximidamide;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H30IN3O2S
assistant