2,2',2'',2'''-[(4,8-Di-1-piperi-dinylpyrimido[5,4-d]pyrimidine-2,6-diyl)dimitrilo]tetrakis-ethanol & 2',3'-Dideoxycytidine AIDS-000882 AIDS000882 DPM & ddC Dipyridamole & ddC Ethanol, 2,2',2'',2'''-[(4,8-di-1-piperidinylpyrimido[5,4-d]pyrimidine-2,6-diyl)dinitrilo]tetrakis- & Cytidine, 2',3'-dideoxy- Persantin & ddC