17-(cyclopropylmethyl)-4,5 alpha-epoxy-6 beta,21-epoxymethano-3-hydroxy-6,14-endoethenomorphinan-7 alpha-(N-phenethyl)carboxamide
17-(cyclopropylmethyl)-4,5 alpha-epoxy-6 beta,21-epoxymethano-3-hydroxy-6,14-endoethenomorphinan-7 alpha-(n-phenethyl)carboxamide