You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-[(3aR,6aS)-3-[(4-methoxyphenyl)methyl]-5,5-dioxo-3a,4,6,6a-tetrahydrothieno[3,4-d][1,3]thiazol-2-ylidene]-2-cyanoacetamide ?
user
C16H17N3O4S2
assistant