(2α,3α,4α,5β,7α,10β,13α)-4,10-bis(acetyloxy)-1,13-dihydroxy-9-oxo-5,20-epoxy-7,19-cyclotax-11-en-2-yl benzoate

4α-acetoxy-2α-benzoyloxy-5β,20-epoxy-1β-hydroxy-7β,10β-dimethoxy-9-oxo-11-taxene-13α-yl (2R,4S,5R)-3-tert-butoxycarbonyl-2-(4-methoxyphenyl)-4-phenyl-1,3-oxazolidine-5-carboxylate