Docetaxel trihydrate Imp.B(EP):1,7ß-dihydroxy-9,10-dioxo-5ß,20-epoxytax-11-ene-2a,4,13a-triyl 4-acetate 2-benzoate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-phenylpropanoate] (10-dehydroxy-10-oxodocetaxel) (Syn:6-Oxodocetaxel).