(R)-2-((((9H-芴-9-基)甲氧基)羰基)氨基)-5-甲氧基-5-氧代戊酸

(R)-2-((((9H-芴-9-基)甲氧基)羰基)氨基)-5-甲氧基-5-氧代戊酸

(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-methoxy-5-oxopentanoic acid