1,4-bis-(toluene-4-sulfonyl)-piperazine-2,5-dione
1,4-Bis-(toluol-4-sulfonyl)-piperazin-2,5-dion
N1,N4-Di-p-toluolsulfonyl-diketopiperazin-2,5
1.4-Di-tosyl-piperazin-2,5-dion
2.5-Dioxo-1.4-di-p-toluolsulfonylpiperazin
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