4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-((((2-amino-4-(methylamino)-1,4-dioxobutyl)amino)(4-hydrophenyl)acetyl)amino)-3,3-dimethyl-7-oxo- 63329-59-9 N(sup 4)-Methyl-D-asparaginylamoxicillin N-(N'-Methylasparaginyl)amoxicillin TA-058