(4'R,4a'S,7a'R,12b'S)-11'-chloro-3'-(cyclopropylmethyl)-9'-methoxy-1',2',3',4',5',6'-hexahydro-4a'H,7a'H-spiro[[1,3]dioxolane-2,7'-[4,12]methanobenzofuro[3,2-e]isoquinolin]-4a'-ol

17-(cyclopropylmethyl)-4,5α-epoxy-3-methoxy-6-(1,3-dioxolan-2-yl)morphinan

17-(cyclopropylmethyl)-4,5α-epoxy-3-methoxy-6-oxo-morphinan

(4'R,4a'S,7a'R,12b'S,13'S)-11'-chloro-3'-(cyclopropylmethyl)-9'-methoxy-1',2',3',4',5',6'-hexahydro-4a'H,7a'H-spiro[[1,3]dioxolane-2,7'-[4,12]methanobenzofuro[3,2-e]isoquinoline]-4a',13'-diol

(4′R,4a′S,7a′R,12b′S)-9′-methoxy-1′,2′,3′,4′,5′,6′-hexahydro-4a′H,7a′H-spiro[[1,3]dioxolane-2,7′-[4,12]methanobenzofuro[3,2-e]isoquinolin]-4a′-ol