The molecule is an organophosphate oxoanion resulting from the removal of all six protons from the phosphate groups of adenosine 5'-pentaphosphate; the major species at pH 7.3. It is a conjugate base of an adenosine 5'-(hexahydrogen pentaphosphate).
[[[[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl]oxy-oxidophosphoryl]oxy-oxidophosphoryl] phosphate