153567-11-4 17-(Cyclopropylmethyl)-4,5alpha-epoxy-14-hydroxy-3-(phenylmethoxy)morphinan-6-one 17-(Cyclopropylmethyl)-7-benzyl-4,5-epoxy-3,14-dihydroxymorphinan-6-one 17-Cpm-nal 3-Benzylnaltrexone 3-O-Benzylnaltrexone Morphinan-6-one, 17-(cyclopropylmethyl)-4,5-epoxy-14-hydroxy-3-(phenylmethoxy)-, (5alpha)-