You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-bromo-3-fluoro-4-(3-oxo-1,2,5,6,8,8a-hexahydroimidazo[1,5-a]pyrazin-7-yl)benzenecarbothioamide using the IUPAC nomenclature.
user
C13H14BrFN4OS
assistant