(-)-alpha-(1R,5R,9R)-5,9-Dimethyl-2-(L-tetrahydrofurfuryl)-2'-hydroxy-6,7-benzomorphan 2,6-Methano-3-benzazocin-8-ol, 1,2,3,4,5,6-hexahydro-6,11-dimethyl-3-((tetrahydro-2-furanyl)methyl)-, (2R-(2-alpha,3(R*),6-alpha,11R*))- 57236-85-8 MR 2034 MR-2034