rac-(2R,3aR,4aR,8aR,8bR)-3a-(hydroxymethyl)-8b-methyl-6-methyleneoctahydro-2,4a-epoxycyclopenta[b]benzofuran-8a(1H)-carbonitrile

(S)-8-((1R,4S)-4-Hydroxy-1-methyl-2-methylene-cyclopentyl)-7-oxo-1,4-dioxa-spiro[4.5]decane-8-carbonitrile