disodium,[[(2R,3S,4R,5R)-5-(2-amino-6-oxo-3H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl] [(2R,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl] phosphate