N-(N'-triphenylmethylglycyl)glycine benzyl ester

2,5-二氧代-1-吡咯烷基N-三苯甲基甘氨酸酯

甘氨酸

N-(N-trityl-glycyl)-glycine ethyl ester

2-((4-nitrophenyl)sulfonyl)ethyl 2-(2-(tritylamino)acetamido)acetate