Class: Monoterpenoid
(–)-α-Pinene
Systematic name: (1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene
(–)-β-Pinene
Systematic name: (1S,5S)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane