(S)-3-((S)-2-((((9H-芴-9-基)メチル酸素基)羰基)アミノ)-4-メチルペンチル酰基)-2，2-ジメチル恶唑アルカン-4-羧酸
(S)-3-((S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-methylpentanoyl)-2，2-dimethyloxazolidine-4-carboxylic acid
(S)-3-((S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-methylpentanoyl)-2，2-dimethyloxazolidine-4-carboxylic acid