The molecule is dianion of P(1),P(2)-bis(5'-adenosyl) diphosphate; major species at pH 7.3. It is a conjugate base of a diadenosine 5',5'-diphosphate.
[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl] [(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate