Synonyms: 6,14-endo-Ethenotetrahydrooripavine,21-cyclopropyl-7a-(1-hydroxy-1-methylethyl)-(8CI); N-(Cyclopropylmethyl)-7a-(1-hydroxy-1-methylethyl)-6,14-endo-ethenotetrahydronororipavine;6,14-Ethenomorphinan-7-methanol,17-(cyclopropylmethyl)-4,5-epoxy-3-hydroxy-6-methoxy-a,a-dimethyl-, (5a,7a)-