methyl (E)-3-[2,2-dimethyl-3-[[2-methyl-4-oxo-3-[(E)-pent-2-enyl]-1-cy clopent-2-enyl]oxycarbonyl]cyclopropyl]-2-methyl-prop-2-enoate

(1R)-3α-[(E)-3-Methoxy-2-methyl-3-oxo-1-propen-1-yl]-2,2-dimethyl-1β-cyclopropanecarboxylic acid (S)-2-methyl-4-oxo-3-[(Z)-2-pentenyl]-2-cyclopenten-1-yl ester

Cyclopropanecarboxylic acid, 3-(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl-2,2-dimethyl-, (1S)-2-methyl-4-oxo-3-(2Z)-2-pentenyl-2-cyclopenten-1-yl ester, (1R,3R)-