thiacycline

Thiatetracycline

6-Thiatetlacycline

(5aS)-7α-Dimethylamino-5aα,6,6aα,7,10a,12-hexahydro-1,8,10aα,11-tetrahydroxy-10,12-dioxo-10H-benzo[b]thioxanthene-9-carboxamide