Chemical Formula: C20H24N10O13P2S2

[[(E)-4-(2-amino-4-oxo-3H-pteridin-6-yl)-2-hydroxy-3,4-bis(sulfanyl)but-3-enoxy]-hydroxyphosphoryl] [(2R,3S,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl hydrogen phosphate