label: [(2R,3R,4R,5R)-5-(guanin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl [(2R,3S,4R,5S)-3,4,5-trihydroxytetrahydrofuran-2-yl]methyl dihydrogen diphosphate
label_lc: [(2r,3r,4r,5r)-5-(guanin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl]methyl [(2r,3s,4r,5s)-3,4,5-trihydroxytetrahydrofuran-2-yl]methyl dihydrogen diphosphate