Docetaxel Impurity 21

Chemical Name: Docetaxel 2'-tert-Butyldimethylsilyl 7,10-Tris(triethylsilyl) Ether

Synonym: (Z)-1-(2-((4-(((6-(methoxycarbonyl)-2-oxoindolin-3-ylidene)(phenyl)methyl)amino)phenyl)(methyl)amino)-2-oxoethyl)-4-methylpiperazine 1-oxide

Smile: O=C(C1=CC=CC=C1)O[C@@H]2[C@]3(O)C[C@@H](C(C)=C(C3(C)C)[C@@H](O[Si](CC)(CC)CC)C([C@@]4(C)[C@@]2([H])[C@@](CO5)(OC(C)=O)[C@@]5([H])C[C@@H]4O[Si](CC)(CC)CC)=O)OC([C@H](O[Si](C(C)(C)C)(C)C)[C@@H](NC(OC(C)(C)C)=O)C6=CC=CC=C6)=O