for the following products
(3AR,4R,5R,6aS)-4-((E)-4-(3-Chlorophenoxy)-3-oxobut-1-en-1-yl)-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl benzoate and 2H-Cyclopenta[b]furan-2-one, 5-(benzoyloxy)-4-[(1E)-4-(3-chlorophenoxy)-3-oxo-1-buten-1-yl]hexahydro-, (3ar,4R,5R,6as)-
