PACLITAXEL SIDE CHAIN 4;PACLITAXEL SIDE CHAIN NO 4;C-13 SIDE CHAIN FOR PACLITAXEL II;PACLITAXE SIDE CHIAN 4;(2R,3S)-N-benzoyl-3-PhenylisoserineMethylEster;(2R,3S)-3-phenylisoserine methyleste;METHYL (2R,3S)-3-(BENZOYLAMINO)-2-HYDROXY-3-PHENYLPROPANOATE;(2R,3S)-1-Benzoyl-2-Hydroxy-3-Aminophenylpionic Acid Ester