TENA

6,6'-(ethylenebis(oxyethyleneimino))bis(17-cyclopropylmethyl)-4,5-epoxymorphinan-3,14-diol

(5α,5'α,6β,6'β)-6,6'-[1,2-Ethanediylbis(oxy)bis(2,1-ethanediylimino)]bis[17-(cyclopropylmethyl)-4,5-epoxymorphinan-3,14-diol]