1 854 Ethyl (2s)-1-(benzylsulfonyl)piperidine-2-carboxylate 1.000 2 6UO 2-[(2~{S})-1-(phenylmethyl)sulfonylpiperidin-2-yl]carbonyloxyethyl pyridine-3-carboxylate 0.700 3 LLD 2-(pyridin-3-ylcarbonylamino)ethyl (2~{S})-1-(phenylmethyl)sulfonylpiperidine-2-carboxylate 0.700