You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-(8-fluoro-1-oxo-6-phenylmethoxy-3,4-dihydro-2H-isoquinolin-7-yl)-1,1-dioxo-1,2,5-thiadiazolidin-3-one .
user
C18H16FN3O5S
assistant