2-<3-benzyl-6-oxo-2-thia-4,7-diaza-(1R,5R)-bicyclo-<3,2,0>-hept-3-en-7-yl>-t-butyl acetate

A name could not be generated for this structure.

2-((2R,3R)-2-mercapto-4-oxo-3-(2-phenylacetamido)azetidin-1-yl)acetic acid