(4R,4aR,7S,7aR,12bS)-3-methyl-9-(2-morpholin-4-ylethoxy)-2,4,4a,7,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-7-ol; Morpholinylethylmorphine; 3-Morpholylaethylmorphin; 3-o-(2-morpholinoethyl)-morphin; beta-Morpholinoethylmorphine