<chemical> 2,2',2'',2'''-((4-(1-piperidinyl)pyrimido(5,4-d)pyrimidine- 2,6-diyl)dinitrilo)tetrakisethanol. Proposed antineoplastic agent that may have antiplatelet properties. ... Pharmacological action: antineoplastic agent, platelet aggregation inhibitors. ... Chemical name: Ethanol, 2,2',2'',2'''-((4-(1-piperidinyl)pyrimido(5,4-d)pyrimidin...