(2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-(methylideneamino)-2-phenylacetyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-(methyleneamino)-2-phenyl-acetyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-(methyleneamino)-1-oxo-2-phenylethyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-7-keto-3,3-dimethyl-6-[[(2R)-2-(methyleneamino)-2-phenyl-acetyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-(methylideneamino)-2-phenyl-ethanoyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid BSPBio_000309 Prestwick3_000235 Prestwick2_000235 SPBio_002230 Prestwick1_000235 Prestwick0_000235 BPBio1_000341