1,2,4,5-Benzenetetracarboxylic 1,2:4,5-diimide, N,N'-bis(4-(piperidino)but-2-ynyl)- 77762-97-1 BRN 5673667 N,N'-Bis(4-piperidinobut-2-ynyl)-1,2,4,5-benzenetetracarboxylic 1,2:4,5-diimide NSC 353100