Cabazitaxel Oxazolidine Impurity

Chemical Name: Cabazitaxel Oxazolidine Impurity ; 5-((2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-acetoxy-12-(benzoyloxy)-11-hydroxy-4,6-dimethoxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-9-yl) 3-(tert-butyl) (4S,5R)-2,2-dimethyl-4-phenyloxazolidine-3,5-dicarboxylate

Smile: CC(O[C@]([C@@]1([H])C[C@H](OC)[C@]2(C3=O)C)(CO1)[C@@]2([H])[C@@H]([C@@](C4(C)C)(C[C@H](OC([C@H]5[C@H](C6=CC=CC=C6)N(C(OC(C)(C)C)=O)C(C)(C)O5)=O)C(C)=C4[C@H]3OC)O)OC(C7=CC=CC=C7)=O)=O