You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R)-3,3-dideuterio-4-(ethylamino)-2-[1,1,2,2,3,3-hexadeuterio-3-(trideuteriomethoxy)propyl]-1,1-dioxo-4H-thieno[3,2-e]thiazine-6-sulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H21N3O5S3
assistant