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-[2-[5-(2-benzylimino-3,6-dihydro-1,3,4-thiadiazin-5-yl)thiophen-2-yl]ethyl]acetamide .
user
C18H20N4OS2
assistant