Nalfurafine

Chemical Name: (E)-N-[(4R,4aS,7R,7aR,12bS)-3-(cyclopropylmethyl)-4a,9-dihydroxy-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]-3-(furan-3-yl)-N-methylprop-2-enamide

Synonym: (2E)-N-[(5a,6b)-17-(Cyclopropylmethyl)- 3,14-dihydroxy- 4,5-epoxymorphinan- 6-yl]- 3-(3-furyl)- N-methylacrylamide