2-(2H3)methyl(1,1,1,3,3,3-2H6)propan-2-yl {[(1S,2R)-3-{[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetoxy-2-(benzoyloxy)-1,9,12-trihydroxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13(14)-en-15-yl]oxy}-2-hydroxy-3-oxo-1-phenylpropyl]amino}methanoate