(+)-(1S,5R,6R,7S,7aR)-6,7-diacetoxy-1-(2-hydroxy)ethyl-5-(phenylmethoxy)methyl-5,6,7,7a-tetrahydro-1H,3H-pyrrolo[1,2-c]oxazol-3-one

(3aS,3bR,4R,7R,7aR)-7-Benzyloxymethyl-4-[2-(4-methoxy-benzyloxy)-ethyl]-2-oxo-tetrahydro-1,3,5-trioxa-2λ4-thia-6a-aza-cyclopenta[a]pentalen-6-one

(-)-(1R,5R,6R,7S,7aR)-6,7-diacetoxy-1-[2-(4-methoxyphenyl)methoxy]ethyl-5-(phenylmethoxy)methyl-5,6,7,7a-tetrahydro-1H,3H-pyrrolo[1,2-c]oxazol-3-one