1-Piperazinecarbothioic acid, 4-(2-pyridinyl)-, {[1-(2-} thiazolyl)ethylidene\]hydrazide 4-(2-Pyridinyl)-N'-(1-(1,3-thiazol-2-yl)ethylidene)-1-piperazinecarbothiohydrazide AIDS-129569 AIDS129569 NSC354671