(4S,5R)-3-benzoyl-2-(4-methoxyphenyl)-4-phenyloxazolidine-5-carboxylic acid; (4S,5R)-3-Benzoyl-2-(4-methoxyphenyl)-4-phenyl-5-oxazolidinecarboxylic acid; 5-€‹Oxazolidinecarboxyli€‹c acid, 3-€‹benzoyl-€‹2-€‹(4-€‹methoxyphenyl)€‹-€‹4-€‹phenyl-€‹, (4S,€‹5R)€‹-;,Paclitaxel Impurity