6-imino-1,9-dimethyl-7H-purin-8-one

5-[(乙酰氧基)甲基]-2-呋喃羧酸乙酯

benzo[g]chromen-2-one

1,1-diphenylethane-1,2-diol

1,2,3-三苯基-1-茚醇