(1R,2S)-2-[(S)-(1,5-dimethylhexyl)]-5-oxo-1-(3-oxobutyl)cyclopentanecarboxylic acid (R)-tetrahydro-4,4-dimethyl-2-oxo-3-furanyl ester

(3S,3aR)-3-[(S)-(1,5-dimethylhexyl)]-1,2,3,4,5,6-hexahydro-6-oxo-3aH-indene-3a-carboxylic acid (R)-tetrahydro-4,4-dimethyl-2-oxo-3-furanyl ester

(1'S,7'aR)-1'-[(S)-(1,5-dimethylhexyl)]-1',2',6',7'-tetrahydrospiro[1,3-dioxolane-2,5'-[5'H]indene]-7'a(3'H)-carboxylic acid (R)-tetrahydro-4,4-dimethyl-2-oxo-3-furanyl ester

(1S,5S,6S)-methyl 2-oxo-6-methylbicyclo[3.1.0]hexane-1-carboxylate