Wiktionary
vetivazulene
n. (context chemistry English) An azulene, 4,8-dimethyl-2-isopropylazulene, obtained from vetiver oil.
Wikipedia
Vetivazulene
Vetivazulene is an azulene derivate obtained from vetiver oil. It is a bicyclic sesquiterpene and an isomer of guaiazulene.