Naloxegol Impurity 1

Chemical Name: (4R,4aS,7S,7aR,12bS)-3-Allyl-7-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)-1,2,3,4,5,6,7,7a-octahydro-4aH-4,12-methanobenzofuro[3,2-e]isoquinoline-4a,9-diol

Smile: O[C@@]12CC[C@H](OCCOCCOCCOC)[C@@]3([H])[C@@]14CCN(CC=C)[C@]2([H])CC5=C4C(O3)=C(O)C=C5