1,4-Bis(2-(acetylsalicyloyloxy)ethyl)piperazine 1,4-Piperazinediyldi-2,1-ethanediyl 2-(acetyloxy)benzoate 79874-85-4 Benzoic acid, 2-(acetyloxy)-, 1,4-piperazinediyldi-2,1-ethanediyl ester S. 1528