Szukana fraza: [Tytuł = "Synthesis of trans\-1,2\-bis\(2\-R\-amino\-1,3,4\-thiadiazol\-5\-yl\)ethene and trans\-1,2\-bis\[3\-\(4\-substituted\-\[delta\]2\-1,2,4\-triazoline\-5\-thione\)\]ethene"]

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