cembrene A

Neocembrene

(1E,5E,9E,12R)-1,5,9-Trimethyl-12-isopropenylcyclotetradeca-1,5,9-triene

(R,1E,5E,9E)-1,5,9-Trimethyl-12-(1-methylethenyl)cyclotetradeca-1,5,9-triene