2-(Diethylamino)ethyl (2S,5R,6R)-6-(2,6-dimethoxybenzamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylate 56211-43-9 Tamethicillin Tameticilina [INN-Spanish] Tameticillin Tameticillin [INN] Tameticilline [INN-French] Tameticillinum [INN-Latin]