preferred_name: ((2S,4S,6S)-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)-4-(ethoxymethyl)-4-hydroxytetrahydro-2H-pyran-2-yl)acetic acid