preferred_name: (6R)-6-((1E,3E)-5-((2S,3S,5R,6R)-5-(((2Z,4S)-4-Acetoxy-2-pentenoyl)amino)-3,6-dimethyltetrahydro-2H-pyran-2-yl)-3-methyl-1,3-pentadien-1-yl)-1,3-dideoxy-4-C-(hydroxymethyl)-alpha-D-erythro-hex-2-ulopyranose