Cabazitaxel Impurity (Oxazolidine Protected)

Chemical Name: 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) 2,2-dimethyl-4-phenyloxazolidine-3,5-dicarboxylate

Smile: O=C(N1C(C)(C)OC(C(O[C@@H]2C(C)=C(C3(C)C)[C@@H](OC)C([C@@]([C@@H](OC)C4)(C)[C@]([C@@]5(OC(C)=O)[C@]4([H])OC5)([H])[C@H](OC(C6=CC=CC=C6)=O)[C@]3(O)C2)=O)=O)C1C7=CC=CC=C7)OC(C)(C)C