(-) - 17( cyclopropylmethyl) - 1, 14 ß- dihydroxy- 4, 5 alpha- epoxy - 6ß - [N- methyl- trans- 3 - (3- furyl) acrylamido] morphinan
(-)-17(cyclopropylmethyl)-1,14 ß-dihydroxy-4,5 alpha-epoxy- 6ß-[N-methyl-trans-3-(3-furyl) acrylamido] morphinan