2-amino-9-[4-[[5-(2-amino-6-oxo-3H-purin-9-yl)-3-hydroxy-oxolan-2-yl]m ethoxy-oxido-phosphoryl]oxy-5-(phosphonatomethoxy)oxolan-2-yl]-3H-puri n-6-one, azane, hydrogen(+1) cation, platinum(+2) cation