organic compounds
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In the title molecule, C12H12N4O3S, there is an intramolecular O—HN hydrogen bond. The dihedral angle between the benzene and triazine rings is 65.9 (3)°. In the crystal, N—HS and O—HN hydrogen bonds link the molecules into chains along [010]. In addition, there are weak π–π stacking interactions between symmetry-related triazine rings with a centroid–centroid distance of 3.560 (3)°.