(4S)-4-hydroxy-2-(3-methoxypropyl)-1,1-dioxo-3,4-dihydrothieno[3,2-e]thiazine-6-sulfonamide; (S)-4-Hydroxy-2-(3-methoxypropyl)-3,4-dihydro-2H-thieno[3,2-e][1,2]thiazine-6-sulfonamide 1,1-Dioxide; (S)-3,4-Dihydro-4-hydroxy-2-(3-methoxypropyl)-2H-thieno[3,2-e]-1,2-thiazine-6-sulfonamide 1,1-Dioxide; (S)-2-(3-Methoxypropyl)-3,4-dihydro-2H-thieno[3,2-e][1,2]thiazine-4-ol-6-sulfonaMide-1,1- dioxide;(S)-3,4-Dihydro-4-hydroxy-2-(3-methoxypropyl)-4H-thieno[3,2-e]-1,2-thiazine-6-sulfonamide 1,1-dioxide; (S)-3,4-Dihydro-4-hydroxy-2-(3-methoxypropyl)-2H-thieno[3,2-e]-1,2-thiazine-6-sulfonamide-1,1-dioxide