3-Morpholylaethyl-dihydro-morphinon-6-enolacetat (bis-hydrogentartrat) [German] 74051-66-4 Morphinan-6-alpha-ol, 6,7-didehydro-4,5-alpha-epoxy-17-methyl-3-(2-morpholinoethoxy)acetate bis(hydrogentartrate)