You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(3,4-difluorophenyl)-4a,5,6,7,8,8a-hexahydro-4H-3,1-benzothiazin-2-amine .
user
C14H16F2N2S
assistant