6,14-Ethenomorphinan-7-methanol, 17-(cyclopropylmethyl)-alpha-(1,1-dimethylethyl)-4,5-epoxy-18,19-dihydro-3-hydroxy-6-methoxy-alpha-methyl-, (5alpha,7alpha(S))-
2-(N-cyclopropylmethyl-4,5α-epoxy-3-hydroxy-6-methoxy-6,14-endo-ethanomorphinan-6α-yl)-3,3-dimethyl-2-butanol