olibene

from The Century Dictionary.

• noun A mixture of levopentene and dipentene, obtained by distilling olibanum with water.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A colorless mobile liquid of a pleasant aromatic odor obtained by the distillation of olibanum, or frankincense, and regarded as a terpene; -- called also conimene.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An essential oil, principally a mixture of diterpenes, obtained by the distillation of olibanum.