You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 4-fluoro-N-[(5-oxo-2-phenyl-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-yl)methyl]benzamide ?
user
C19H13FN4O2S
assistant