2H-Cyclopenta[b]furan-2-one, 3,3a,6,6a-tetrahydro-, (3aR,6aS)-
2H-Cyclopenta[b]furan-2-one, 3,3a,6,6a-tetrahydro-, (3aR-cis)-
(3aR,6aS)-3,3a,6,6a-Tetrahydro-2H-cyclopenta[b]furan-2-one
(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one
(-)-(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one
(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one
(3aR,6aS)-3,3a,6,6a-tetrahydro-2H-cyclopenta[b]furan-2-one
(3aR,6aS)-3,3a,6,6a-Tetrahydrocyclopenta[b]furan-2-one
(-)-(1S,5R)-2-Oxabicyclo[3.3.0]oct-6-en-3-one