2-[(2-acetamido-6-oxo-3H-purin-7-yl)methoxy]ethyl acetate

N,N-二苯基-氨基甲酸 2-(乙酰氨基)-9H-嘌呤-6-基酯

Guanosine

7-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)-N2-acetylguanine

2-(乙酰氨基)-9-乙烯基-9H-嘌呤-6-二苯氨基甲酸酯