Cabazitaxel Des-t-BOC Impurity 

Chemical Name: (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-Acetoxy-9-(((2R,3S)-3-amino-2-hydroxy-3-phenylpropanoyl)oxy)-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-12-yl benzoate;

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](O)[C@H](C5=CC=CC=C5)N)=O)C(C)=C4[C@H]3OC)O)OC(C6=CC=CC=C6)=O)=O