(2S,6R)-(2-phenylacetoxy)methyl 3,3-dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

(2-phenylacetoxy)methyl (7R)-3-methoxy-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

(3R)-3-[(1S,5R)-3-benzyl-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]hept-2-en-6-yl]-3,4,4-trimethylthietan-2-one

1-甲基-3-(2-苯基乙基)苯

1-甲基-2-(2-苯基乙基)苯