1,3-Diazaspiro(4.4)non-2-ene, 1-methyl-2-(4-pyridinyl)-, dinitrate 1-Methyl-2-(4-pyridinyl)-1,3-diazaspiro(4.4)non-2-ene dinitrate Dwuazotan 1-metylo-2(4-pirydylo)-5,5-tetrametyleno-imidazoliny [Polish] HM2950200 TT-29-81