Vinflunine Impurity 4

Chemical Name: Methyl (3aR,3a1R,4R,5S,5aR,10bR)-4-acetoxy-9-((S)-3-((3S,5R)-5-(1,1-difluoroethyl)piperidin-3-yl)-2-(1H-indol-2-yl)-1-methoxy-1-oxopropan-2-yl)-3a-ethyl-5-hydroxy-8-methoxy-6-methyl-3a,3a1,4,5,5a,6,11,12-octahydro-1H-indolizino[8,1-cd]carbazole-5-carboxylate

Smile: O=C(OC)[C@]([C@H](OC(C)=O)[C@@]1(CC)[C@@]2([H])[C@@]3(CCN2CC=C1)C4=C5)(O)[C@]3([H])N(C)C4=CC(OC)=C5[C@](C(OC)=O)(C6=CC7=C(C=CC=C7)N6)C[C@]8([H])C[C@](C(F)(F)C)([H])CNC8