You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N',2,2-trimethyl-N-[(3-methylphenyl)methyl]-1,1-dioxo-1,4-thiazinane-4-carboximidamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H25N3O2S
assistant