penicilin V
Sodium; (2S,5R,6R)-3,3-dimethyl-7-oxo-6-(3-phenethyl-ureido)-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylate
Sodium; (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[3-((E)-2-p-tolyl-vinyl)-ureido]-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylate
Sodium; (2S,5R,6R)-6-{3-[(E)-2-(4-chloro-phenyl)-vinyl]-ureido}-3,3-dimethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylate
Sodium; (2S,5R,6R)-3,3-dimethyl-7-oxo-6-{3-[(E)-2-(3,4,5-trimethoxy-phenyl)-vinyl]-ureido}-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylate