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(1-Aminocyclobutyl)-1-piperazinylmethanone

[1-(Methylamino)cyclobutyl]-1-piperazinylmethanone

[1-(Dimethylamino)cyclobutyl]-1-piperazinylmethanone

1H-imidazol-1-yl-1-piperazinylmethanone

4-Oxazolyl-1-piperazinylmethanone

1-(1-Piperazinyl)-1,2-propanedione

(2-Methyl-4-thiazolyl)-1-piperazinylmethanone

3-Ethyl-3-oxetanol

4-Cyclobutyl-4-piperidinol

2-Methyl-2,8-diazaspiro[4.5]decan-3-one