in the form of any one of its stereoisomers or a mixture thereof, and wherein the exocyclic dotted line represents a carbon-carbon single or double bond, and one endocyclic dotted to line represents a carbon-carbon single bond and the other endocyclic dotted line represents a carbon-carbon double bond and R, R1 and R2 represent, independently from each other, a hydrogen atom or a C1-3 alkyl group and their use in perfumery to impart odor notes of the green, floral type.