isopimarane

noun1

1. •
   A tricyclic diterpene with IUPAC name (2S,4aS,4bR,8aS,10aS)-2-ethyl-2,4b,8,8-tetramethyl-3,4,4a,5,6,7,8a,9,10,10a-decahydro-1H-phenanthrene.