(Z)-N-(3,5-Dimethylthiazol-2(3H)-ylidene)-4-hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxamide 1,1-dioxide; N-[(2Z)-3,5-Dimethylthiazol-2(3H)-ylidene]-4-hydroxy-2-methyl-2H-1,2- benzothiazine-3-carboxamide 1,1-dioxide
(Z)-N-(3,5-Dimethylthiazol-2(3H)-ylidene)-4-hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxamide 1,1-dioxide; N-[(2Z)-3,5-Dimethylthiazol-2(3H)-ylidene]-4-hydroxy-2-methyl-2H-1,2- benzothiazine-3-carboxamide 1,1-dioxide