You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[2-[[(3aS,6aR)-5,5-dioxo-3-[3-(trifluoromethyl)phenyl]-3a,4,6,6a-tetrahydrothieno[3,4-d][1,3]thiazol-2-ylidene]amino]-2-oxoethyl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H22F3N3O5S2
assistant