9-ethylidenefluorene

9-芴乙酸

9-羟基-9-甲基芴

9-芴酮

(S)-benzyl 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-((4-methyl-2-oxo-1,2-dihydroquinolin-7-yl)amino)-4-oxobutanoate