label: (3-((2S)-2-AMINO-3-METHYL-BUTANOYL)OXY-2-((2-AMINO-6-OXO-3H-PURIN-9-YL)METHOXY)PROPYL) (2S)-2-AMINO-3-METHYL-BUTANOATE
label_lc: (3-((2s)-2-amino-3-methyl-butanoyl)oxy-2-((2-amino-6-oxo-3h-purin-9-yl)methoxy)propyl) (2s)-2-amino-3-methyl-butanoate