isopropyl (2R,3S)-3-acetamido-3-(4-fluorophenyl)-2-hydroxypropanoate

N-de-tert-butoxycarbonyl-N-[2-(1-fluoro-2-methyl)propyloxycarbonyl]-7,10-di-(2,2,2-trichloroethyloxycarbonyl)-3-dephenyl-3'-(4-fluorophenyl)docetaxel