Acetic acid (2S,3R,4S,6R)-6-hydroxy-2,4-dimethyl-4-(2,2,2-trifluoro-acetylamino)-tetrahydro-pyran-3-yl ester

(2R,4S)-4-[(2R,4S,5R,6S)-5-Acetoxy-4,6-dimethyl-4-(2,2,2-trifluoro-acetylamino)-tetrahydro-pyran-2-yloxy]-2-ethyl-2,5,7,12-tetrahydroxy-6,11-dioxo-1,2,3,4,6,11-hexahydro-naphthacene-1-carboxylic acid methyl ester