The molecule is a car-3-ene (3,7,7-trimethylbicyclo[4.1.0]hept-3-ene) that has S configuration at position 1 and R configuration at position 6. It is an enantiomer of a (-)-car-3-ene.
(1S,6R)-3,7,7-trimethylbicyclo[4.1.0]hept-3-ene