Cabazitaxel DIBOC Impurity

Chemical Name: (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(acetyloxy)-12-(benzoyloxy)- 2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4,6-dimethoxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4] benz[1,2-b]oxet-9-yl ester,(αR,βS)β-[bis[(1,1-dimethylethoxy)carbonyl]amino]-α-hydroxy-benzenepropanoic acid

Smile: O=C(OC(C)(C)C)N(C(OC(C)(C)C)=O)[C@@H]([C@@H](C(O[C@H]1C[C@]2(O)C(C)(C)C([C@@H](OC)C([C@@]3(C)C([C@@](CO4)(OC(C)=O)[C@H]4C[C@@H]3OC)[C@@H]2OC(C5=CC=CC=C5)=O)=O)C1C)=O)O)C6=CC=CC=C6