The molecule is an enal that is pentalen-13-ol in which the primary hydroxy group hax been oxidised to the corresponding aldehyde. It is an enal and a sesquiterpenoid. It derives from a pentalenene.
(1R,2R,5R,8S)-2,10,10-trimethyltricyclo[6.3.0.01,5]undec-6-ene-6-carbaldehyde