2H-(1)Benzothieno(2,3-e)-1,2-thiazine-3-carboxamide, 4-hydroxy-2-methyl-N-2-thiazolyl-, 1,1-dioxide

4-Hydroxy-2-methyl-1,1-dioxo-N-(1,3-thiazol-2-yl)-1,2-dihydro-1lambda~6~-[1]benzothieno[2,3-e][1,2]thiazine-3-carboxamide