Answer: terpenoids

AnswerCrossword Clue
terpenoidsAny of a large class of organic compounds including terpenes, diterpenes, and sesquiterpenes. They have unsaturated molecules composed of linked isoprene units, generally having the formula (C5H8)n
terpenoidsTERPENOID, any one of a series of isomeric hydrocarbons of pleasant aromatic odor