4,5α-epoxy-19anti-((R)-1-hydroxy-1-methyl-3-phenyl-propyl)-3,6-dimethoxy-6β,14-ethano-morphin-7-ene-17-carbonitrile
(R)-2-(4,5α-epoxy-3,6-dimethoxy-6α,14α-etheno-morphinan-7α-yl)-4-phenyl-butan-2-ol
(R)-2-(4,5α-epoxy-3,6-dimethoxy-17-methyl-6α,14α-etheno-morphinan-7α-yl)-4-phenyl-butan-2-ol
(R)-2-(4,5α-epoxy-17-hydroxymethyl-3,6-dimethoxy-6α,14α-etheno-morphinan-7α-yl)-4-phenyl-butan-2-ol