96453-67-7 Ethyl 4,5-epoxy-3,14-dihydroxy-17-methylspiro(morphinan-6,2'-oxirane)-3'-carboxylate (3'R,5alpha,6beta)- Nih 10367 Nih-10367 Spiro(morphinan-6,2'-oxirane)-3'-carboxylic acid, 4,5-epoxy-3,14-dihydroxy-17-methyl-, ethyl ester, (3'R,5alpha,6beta)-