Spruceanol

(5S,10R)-13-Methyl-17-nortotara-8,11,13,15-tetrene-3α,12-diol

(2R)-8-Ethenyl-1,2,3,4,4a,9,10,10aβ-octahydro-1,1,4aα,7-tetramethyl-2α,6-phenanthrenediol