Vinflunine Impurity 3

Chemical Name: Methyl (3R,3aS,3a1R,4R,5S,5aR,10bR)-4-acetoxy-9-((4R,6S,8S)-4-(1,1-difluoroethyl)-8-(methoxycarbonyl)-1,3,4,5,6,7,8,9-octahydro-2,6-methanoazecino[4,3-b]indol-8-yl)-3a-ethyl-8-methoxy-6-methyl-3a,4,5a,6,11,12-hexahydro-3H-3,5-epoxyindolizino[8,1-cd]carbazole-5(3a1H)-carboxylate

Smile: O=C([C@@]1([C@H](OC(C)=O)[C@@]2(CC)[C@@]3([H])[C@@]4(CCN3C=C[C@H]2O1)C5=C6)[C@]4([H])N(C)C5=CC(OC)=C6[C@@]7(C(OC)=O)C[C@]8([H])C[C@](C(F)(F)C)([H])CN(C8)CC9=C7NC%10=C9C=CC=C%10)OC