[(4E,6E)-12-({2-O-acetyl-3,6-dideoxy-4-O-[2,6-dideoxy-4-O-(2,2-dimethylpropanoyl)-3-C-methylhexopyranosyl]-3-(dimethylamino)hexopyranosyl}oxy)-14-(acetyloxy)-2-ethyl-5,9,13-trimethyl-8,16-dioxo-11-(2-oxoethyl)oxacyclohexadeca-4,6-dien-3-yl]methyl acetate