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-[(3aR,6aR)-3-[(4-fluorophenyl)methyl]-5,5-dioxo-3a,4,6,6a-tetrahydrothieno[3,4-d][1,3]thiazol-2-ylidene]butanamide .
user
C16H19FN2O3S2
assistant