(R)-2-((((9H-芴-9-基)甲氧基)羰基)氨基)-4-甲氧基-4-氧代丁酸

(R)-2-((((9H-芴-9-基)甲氧基)羰基)氨基)-4-甲氧基-4-氧代丁酸

(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-methoxy-4-oxobutanoic acid