E. kyselina (6R,7R)-7-amino-3-{[(2,5-dihydro-6-hydroxy-2-methyl-5-oxo-1,2,4-triazin-3-yl)thio]methyl}-8-oxo-5-thia-1-azabicyklo[4,2,0]okt-2-en-2-karboxylová.
E. kyselina (6R,7R)-7-amino-3-{[(2,5-dihydro-6-hydroxy-2-methyl-5-oxo-1,2,4-triazin-3-yl)thio]methyl}-8-oxo-5-thia-1-azabicyklo[4,2,0]okt-2-en-2-karboxylová.