(-)-(1R,5R,9R,2''S)-5,9-Dimethyl-2'-hydroxy-2-tetrahydrofurfuryl-6,7-benzomorphan HCl 2,6-Methano-3-benzazocin-8-ol, 1,2,3,4,5,6-hexahydro-6,11-dimethyl-3-tetrahydrofurfuryl-, hydrochloride, (-)-(2R,6R,11R,2'S)- 57287-04-4