The molecule is 2-Methylcyclohexa-1,3-diene in which a hydrogen at the 5 position is substituted (R configuration) by a 6-methyl-hept-5-en-2-yl group (S configuration). It is a sesquiterpene found in the dried rhizomes of Indonesian ginger, Zingiber officinale. It is a sesquiterpene and a cyclohexadiene. It is an enantiomer of an ent-zingiberene.
(5R)-2-methyl-5-[(2S)-6-methylhept-5-en-2-yl]cyclohexa-1,3-diene