Oxytetracycline Hydrochloride Imp. B (EP), Oxytetracycline Imp. B (EP), Tetracycline Hydrochloride, Oxytetracycline Hydrochloride Imp. B (EP) as Hydrochloride, (4S,4aS,5aS,6S,12aS)-4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydro